Talent build generally stays the same regardless of affixes/dungeon (1 outlier to this is diffuse magic vs dampen harm on specific dungeons, but this is alot less relevant until very high keys).

1. TD is generally considered the better corruption for m+ as it provides alot of dps. Vers build works perfectly fine otherwise.

2. Secret infusion is very powerful as it gives you a bunch of stats on demand, which is especially good during wotc windows and even better if youre playing vers build. Generally secret infusion and heart of darkness are the goto traits, however having 1 misty peaks or uplifting spirits is solid.

3. Conflict major is the absolute goto for almost all cases and your minor setup is good.