Deathwise Signet and Cascade is worth it for Berserkers from VoA.
PvP it's decreased stun duration and Max HP. For PvE it's Max HP then it's whatever you want like increase HP restoration is good. As long as you get Max HP if you are doing PvE, then it's good enough.
This is a tough call since I prefer empowered brooch for the effect and quickcarve brooch for the extra +6 crit rate. Both choices are good so it's the matter of preference really. I plan to get both, kekeke.
I still prioritize on using the 3 damage increase on things like Ambit and Discovery Sorc weapon because I have the crit jewelry, etching, and innerwear for boosted crit rate already. I don't know your setup or your goals for that matter so if you want to settle with Ambit, then take off behind damage for crit rate. If you get more crit additions from jewelry, etching, and innerwear then go for 3 damage increase rolls.
It will decrease animation times especially animation locked skills. Jump is not a skill, so no. Animation lock like Flaming Barrage is a good example.
Yeah that's the thing when suggesting about your build. What innerwear you have, etchings, jewelry, etc. So it's hard for me to tell you directly on which path you should go with whatever funds or goals you have in your setup.
Isn't there a skill that drains HP instead of MP big time that you can overcharge/block spam that? There you go I guess. I don't play zerker. I do use Warrior's shadow spam to purposely get my HP low when I run RG with Slaying crystal.
Full crit build just seems to be the way to go at the moment, but I just don't have my full end-game setup to say for certain if it makes a grand difference or not. So either choices are fine if you want to do 3:2 or full crit build. The best way is how I tell everyone else, "test and see what result you'll get". Right now with my current setup, my Sorc is on full crit build and I seem to see a good difference on how often my Nova and Fireblast crits, but I could just be having good RNG luck that day. So I gotta test several days if I feel like a full crit or a 3:2 jewelry setup is the way to go for me or not.
Always state which class you are talking about because that really affects opinions on setups.
Movement speed, Endurance, MP regen.