I'm still not sure why Itemrespawn and Itemrespawntime are disabled for coop now though. And last I checked, not even Terminal could change that. (And I'm pretty sure changing that would be fairly impossible with lua anyway...) Personally, that was one of the things I basically ALWAYS enabled when I was hosting coop, along with needing all players to reach the exit in order to change map, just because it made things less annoying when someone ran in front of you and stole all the rings out of the level.