​Single Entity WS

Skarbrand, Bloodthirsters, Exalted Bloodthirsters, and the Daemon Prince of Khorne aren't great combatants for their high prices largely down to low WS and low AP ratios. Looking at Giants, Dragons, Shaggoths, Ghorgons, etc. we see an average AP ratio of around 72% with WS values ranging from 460 to 700. Khornes design calls for melee excellence across the board, however Khorne units fail at this task having WS on the low end considering price and having poor AP ratios. 

The Daemon Prince of Khorne has 520 WS and a 61% AP ratio. (572 with Frenzy). +80 AP gives 600 with a 67% AP ratio (660 with Frenzy)

The Bloodthirster has 520 WS with a 69% AP ratio. +80 AP gives 600 WS with a 73% AP ratio. 

The Exalted Bloodthirster has 580 WS with a 69% AP ratio. +80 AP gives 660 WS with a 73% AP ratio.

Skarbrand has 620 WS with a 70% AP ratio (682 with Frenzy). +80 AP gives him 700 Ws with a 74% AP ratio (770 with Frenzy)

Moon Dragons have 520 WS with a 73% AP ratio for cheaper with a breath attack thrown in.

Imrik has 580 WS with a 78% AP ratio at a discount to the Bloodthirster characters when accounting for the breath attack tax.

Archaon has 470 WS with a 70% AP ratio (517 with Frenzy) while also being a caster and at a much lower price point.

The suggested changes produce a reasonable combat premium for Khorne characters considering price and bring their AP ratios into the average range as all are somewhat below average.

Similarly Khorne's mortal characters are harmed with a lower AP ratio than the unmarked version. Matching their AP ratio to the unmarked lords helps their appeal off of the Juggernaut. Setting their Knockdown resist to 80% like the dwarfs allows the foot versions to be more effective as cheap duelists as well, a trend that is beneficial for all foot characters. The results end up being reasonably above average as we'd expect form Khorne.

Finally the Soulgrinders ability to deal damage with it's missile is abyssal and needs significant help. With the current values even if made targetable it'd be fairly weak so I'd lean into making it unreliable but powerful. Boosting the number of projectiles to 3 helps with this while being difficult to abuse simply because you can't reliably target them (their accuracy is also poor as a shotgun). For clarity the max damage you can get with 3 projectiles would be 1080 with a 75% AP ratio. Dedicated artillery like Little Grom are at 785 (79% AP), Cannons with 4 entities are 1760. The result would be powerful but limited which is I think the goal.

Khorne Cav

It's no secret Bloodcrushers and Skullcrushers are somewhat disappointing. This comes from a combination of factors and therefore requires multiple targeted buffs to address them.

First speed, 62 is just too slow post 2.0. Originally 62 was balanced around a 66 speed for heavy cavalry like Chaos Knights or Empire Knights. With those speeds set at 70 and 78 Juggernaut cav (and characters) are easily avoided by other mobile units. Additionally when engaging against infantry while decent damage dealers (though they've been powercrept somewhat) they cannot easily cycle charge without bleeding significant value due to their extremely slow speed outside of the charge. Raising them to 70 move speed helps significant.

Next is damage. All monstrous cav suffer from pretty poor splash optimization when attacking infantry. Skullcrushers ~147 damage (70% AP) per attack on the charge but currently divide that between 4 targets when fighting infantry. This results in about 37 damage per target before armor which is unable to kill a gnoblar. This means entities which survive attacks can absorb impact damage meant for other targets and means follow up attacks are at a significant risk of wasting damage by overkilling. Even if you lower the splash value to 2 you end up with ~74 damage before armor which regularly fails to kill empire swordsmen. 70 damage when armor low rolls 15% reduction just barely kills a swordsmen in one attack. Against every mid tier infantry you're looking at 2 attacks at best.

This gets even worse in sustained combat where even bloodcrushers with their 18 BVI are unable to kill a full health gnoblar with splash set to 2, much less 4 (39 damage versus 56 health). Removing splash improves performance and kills notably, increasing damage into infantry by around 15% without impacting performance into large. I'd encourage extending this to all monstrous cavalry who tend to underperform into infantry relative to normal cav.

Gorebeasts

In brief, these guys don't get enough for their trade offs. The character mounts are an easy fix, their higher AP values and damage are actually a decent gain over other chaos chariot mounts their collision attack values just waste a lot of damage. Raising them by 1 produces a better optimized result and makes them have real gain for the speed loss.

For the unit they suffer from the problem most elite chariots do now that most mid tier chariots mulch all by the highest armor infantry in a single hit. 146 damage (28% AP) and 177 damage (67% AP) are the same against most infantry who are instantly killed. Jade Warriors at 80 armor still die in one hit on average to both chariots before considering impact damage. At a more than 50% price increase you just don't get anything worthwhile. The solution is to get Gorebeasts to the point where they can kill or severely damage 2 mid tier infantry in a single collision attack. My recommendation is based on hitting WS values which kill chaos warrior more than half the time on average. 

228 total damage divided by 2 with an 80% AP ratio gets us ~91 damage which is guarenteed for the Khorne variant and common for the normal variant. As noted in another thread it's the model I'd recommend for Razorgor chariots, White lion chariots, and Cold One chariots as well.

Other tweaks

Sort of the grab bag here.

Khorne Warriors with Dual Axes pay a premium over halberds and great weapons unlike the Chosen which feels off given their performance often isn't worthwhile over the shield variant for 150 less. Lowering the cost to 900 at least gives parity with the halberds and potentially gives them more of a chance to see play, though 850 would be more in line with the model used by the Chosen which is currently effective.

Khorne Minos are just too strong, have been since they got the major price cut and frenzy for free in 2.0. While they were fair to weak prior to those changes they've been crowding out other elite options for a long time and could use a price hike. Given I expect them to show up for the BM this also helps avoid them becoming the only marked BM unit we'll see after Tzeentigors get nerfed. +50 is conservative but makes them less cost effective relative to the Khorne cav who with the modest buffs suggested should all be competitive.

Forsaken of Khorne need more to make up for getting nothing from the mark of khorne but losing 5 MD. All Forsaken could use the health buff given they're not performing super well these days, with the CB buff giving Khorne Forsaken a meaningful damage boost over other units. These guys will probably still end up as a dead unit given the competition from bloodletters, Dual Axe Warriors, Shield Warriors, Dual Axe Marauders, and Khornegors but hey you do what you can.

Bloodletters and Exalted Bloodletters have less BvI than empire Greatswords. This isn't a necessary buff it just bothers me that Khornes greater Daemons are one of the GW with the worst benefit in terms of BvI. Extremely petty and unimportant but it bothers me.

Anyway thanks for getting to the end if you read through it, my hope is with these minor touch ups and the upcoming DLC Khorne can end up in a position where it'll be relatively stable balance wise and can be used as a measuring stick given it'll lack more DLC.