Hmm, something does look off with my crit damage now that you mention it. Combat Metrics shows 15% lower than it should be. I’m assuming 10% of that is Minor Brittle (I believe this is on the Iron Atro now but it isn’t shown). The other 5% is unknown, maybe from the Major Force as you said.
Do you have a damage number for the same skill crit vs non-crit? I wonder if it’s an addon/UI bug or if crits are actually hitting lower than intended.
I just tested and the Major Force from Aggressive Warhorn is working fine.
I have 56 points in Elfborn for 20%, as well as the Shadow Mundus and 7 gold divines for 18%. My crit bonus damage is therefore
50% + 20% + 18% = 88%
Here are my baseline light attacks. 3236 standard and 6083 crit, so they are doing 6083/3236 = 188% as predicted.
Major Force should add 20%, bringing my crit bonus damage to 108%.
Then I use Warhorn and light attack more. 3451 standard and 7178 crit, so they are doing 7178/3451=208% as predicted.
This confirms that there is no issue with the buff, it is working as intended with the new value.
The confusion is coming from the Combat Metrics addon, which still reports my max crit damage as 103%. It looks like it's just hard coded that Major Force is 15% and needs to be updated for Markarth.