I think there are a few legit problems throughout the expansion packs that wouldn't hurt to be patched in this collection, though. Things that don't even have anything to do with multiplayer. Being able to jump over that fence in the first level of Caribbean and not being able to get back over is the first thing that comes to mind. I understand wanting to keep it original, though.
1.Winter eps walls can kill you
2.Duke Sprite is mess up
I really can't remember the rest It been like it been like almost an year since Me and Rose where finding bugs