Hey real late to the party but I also play KOTOR 2 on mac and have a ton of mods downloaded both through workshop and downloaded off of deadlystream, nexus, and gamefront. Using a wineskin has always been a big hassle and buggy for me (Especially since I'm terrible with computers in general), so mods that use TSL Patcher are out of the question, which sucks because there are some phenomenal mod authors who use that program for their mods. In regards to download mods off the internet, you want simpler mods that can be dropped right in your game's override folder. That means armors, reskins, weapons, and head SKINS (Nothing that really adds any models or adds new heads generally) should all be good. More complicated mods that run scripts in game can be a real issue or downright impossible without a wineskin on MAC, so your options are limited sadly. That being said, I am an newbie at best so I'm speaking from personal experience exclusively and not from a seat of knowledge or modding experience. If you have any questions PM me and I can send you my mods list that I have downloaded and hopefully help you out!