Really, really love this mod. I also often get multiple lootboxes from a single enemy, but I don't really mind. Seems to work as intended otherwise.
However, I recently started my first ever modded WOTC legend playthrough. Everything was working about as well as one could hope, considering the amount of mods. I was using basically the same modlist that the youtuber ChristopherOdd uses in his newest XCOM 2 series, http://steamcommunity.com/sharedfiles/filedetails/?id=1192756944
plus this mod and the PCS expansion.

The issue I encountered was that upon completing my first chosen stronghold mission, the game would just get stuck in an infinite loading screen which would eventually crash the game. In this state, it would be completely impossible to close the game, only system reboots worked.

I'm talking about the (usually) short loading screen that occurs before you see your units in the Skyranger returning to the Avenger. It would sit there and endlessly eat up memory but never finish loading, victory theme still playing. Sometimes the RAM usage would go as high as 13 gigs, still climbing, but I would usually reboot before that... Most stuff like clicking or tabbing out and back in would result in the game crashing.

Anyways, obviously I can't be a hundred percent sure that this is the mod causing it, but I see here that it has had issues before with crashes at the end of missions, and the youtuber I mentioned earlier that had the same modlist, minus this mod, did not have this issue.

Things I've tried:
Deleting config files, verifying game cache, loading up the save file and completing the mission many, many times, with a decreasing number of mods. Same issue every time, although game would just crash on launch if I unticked any mods that added items or enemies, such as this one, so I obviously never got to the actual loading screen of doom in those cases.

I guess the only thing I can do is start a new campaign with the same mods except this one, and see if I get the same issue when I finish my first chosen stronghold again? I don't know, took me ages to get there... And that save is ♥♥♥♥ed, as far as I can tell.

I guess this is just a bug report, kind of. Would love to hear if anyone else has had this or similar issues though, and if anyone knows whether or not there's anything I can do about it. I can provide more info, if needed.