The campaign will be fine once they get the other acts out. Right now its still bloated with zones that shouldn't even exist, especially in act 3, just so they have enough content to get us to maps. It'll also help if they ever fix early game itemization since they never implemented vendor...
Sieves and Xray will eliminate any foreign material issues. No way they'd be able to hide ingredients from the label. The vinegar is what they're using to increase acidity to extend shelf life.
https://poe2db.tw/Paragon
You can search for practically anything on this site and it'll have it. Even lists the obscure stuff like jewels that change the passive tree, etc.
One of the best ways to go low life for monk is the Atziri communion support gem. This lets you reserve life instead of spirit. A 100 spirit skill will take you to low life.
As much as I love shadow, I've played tons of Caster/Monk/ES/Crit builds already. So I'd take Templar or Marauder and hope they fix/buff fire and Es/armor
I'd imagine the easiest way for them to add more content is more skills, especially spells. They have the meat and potatoes from PoE 1, wheres my Etheral knives and blade vortex. Freezing pulse, rebalancing fire, etc.