This thread is long, I have only read about half of it, so forgive me if this has been discussed, but I've found two notable issues with the mod:
1. I can't pick up the M2 grenade launcher dropped by NPCs. I get the prompt to swap for the M2, but my character immediately drops the weapon and switches back to the previously held weapon.
2. There are sometimes a bunch of purple question marks walking the streets, which I assume are NPCs spawned by the mod whose models aren't loading for some reason.
Also, not really a bug, but man, some of the hard level activities are HARD with the new spawns.