Here are some simple changes that should not take very long to implement but will improve balance (or so I think). If any good suggestions pop up in the comments I will add them.
-Change HP to 125 (like many before have suggested)
-Add critical chance aura (move the one from huntsman to here)
-Change passive to trigger on all taggable enemies instead of tagged ones
-Give 33% curse resistance for entire team OR grimoires carried by the Witchhunter Captain no longer impact health
I know this is probably too much, but I will let FS pick and choose which ones are best/most fun.
-Remove critical chance aura
-Add increased headshot damage to passive (in addition perhaps lower longbow bodyshot damage a bit)
-Add movement speed for team
-Remove damage cap on bosses when landing headshots only
Edit: I would like to see huntsman have extra crit chance when landing headshots, but due to the way crits are calculated I don’t think this is possible. Currently crits are determined when firing your shot instead of when you hit an enemy.
Therefor I prefer extra headshot damage.