These are the two conflicts the launcher complains about but they don't seem to cause issues. There is still an occasional crash to desktop and hang after action that I'm trying to figure out.

Mods with colliding overrides found!
These mods will not (fully) work when run together.

Conflict found for 'XComPathingPawn':
[WotC] Gotcha Again
[WotC] Peek From Concealment UI Fix

Conflict found for 'X2Action_MoveClimbWall':
[WotC] World War L
A Better ADVENT: War of the Chosen

This current set should work together.

The only issue I've found is the Avengers Defense mission requires disabling of Quick Soldier Info (and possibly, which I removed, Red Fog). Though I need to get to that mission again to test if this fixes those issues.

And the Even More Maps! mod seems to have a few buggy maps one in particular that spawns without any packages to mark and thus results in a "Failure - Poor" even if you kill everyone on the map.

I removed some mods that I found to have conflicts with all 3 collections that also resulted in performance issues.

It should work together I'm still figuring out issues and removing things from this collection.

Does this collection work with your Cosmetics and RPGO collection? Or am i supposed to choose between one of these 3?