What did you fix about the multiplayer? As far as I remember, the cl_run check caused desyncs (which has long been fixed in DISDAIN) but what other issues did you find?
I have fixed the bat files, for the coop host and join. It only asked for name and amount of players, but in gzdoom you have to also specify ip address and port if you want the game to be joinable by others. You also have to specify ip and port when joining others.
