I think Caltrops helps quite a lot when using Grenades as it is shot-ranged.
The Boar-companion will hopefully help with this by blocking whatever is incoming.
SmokeScreen is the obvious "get out of jail" card and really only there for emergencies.
Hared generation will likely be an issue for this type of build, so I really like the Mortal enemy idea for increased hatred-generation. Im unsure what to substitute if for, but maybe Smoke Screen.
The Spitefire turret sounds a bit weak, but it of course needs playtesting (like every other build atm.)
Also, the custom engineering could be swapped for i.e. Numbing Traps if the time is enough.
Just my thoughts/take on it. I hope it will be viable, but only time will tell
i suppose they will bull**** with the sentry ward aswell ; i bet we will see something like ; "there can only 1 sentry be active at a time" mechanic
atleast thats what i imagine if not i could lay down like 10 traps at the same time ( i mean 40 sec duration is huge) ; each of those sentries having 32% of my wpn dmg (presumeably per second ) which wold equate to a total of 320% dps on top of grenade and cluster rocket spam.
and ofc multishot with suppression for sitation with many enemies i should be able ro regain quite alot of discipline ; given that mul****shot only costs 15 hartred.
iam also wondering if grenades also regain hartred if i hit nothing ; i dont know if you noticed it ; but DH is the only class that generates hartred per shot even if she does hit nothing. Monk and barb on the other hand always need to hit to generate spirit / rage.
Re: Rockets & Grenades; viably ignore your weapon?
This would be my take on the build. I have to confess the main reason I like the idea is that shooting a crossbow several times a second is just so horrible of a concept. I simply couldn't stand playing a basic archer build. Luckily we have an alternative, one can go with a one hander and shield like a proper assassin!