I was wondering if anyone's really tried out the multiplayer, and how one gets it to play nice with custom heroes if at all?
There were a few ways to get multiplayer going in the past. There was a program called Hamachi where you could basically trick the game into going online for multiplayer. It's been a LOOONG time since I've used it though.
The other thing is that any custom meshes/skins/etc. need to be shared among all players, and all of the file paths had to be the same, so before a match the game would kind of share resources. That would take a while uploading/downloading resources for everyone.