We don't fully know numbers, and new passives.
new Caustic is going to be a bit like iceshot/firetrap. The Direct aoe is now going to shotgun. The ground degen won't. At the same time, the ground degen will scale with dot, as well will the poisons applied on hit. So, DOT scaling will be good. Bow passives are getting damage, and damage over time scaling. there are already shadow nodes that are phsy, chaos, and damage over time scaling.
so I think new CA, you're going to want to focus on poison application. ground degen a bonus, to primary poison damage. Both will still be scaling damage over time, swift affliction, void manip, etc.
Those 3.3 builds are going to be largely out of date. Empower wont mean much, if you are scaling poison DOT, not the flat scaling degen.
Wither RAT or mirage archer.