3-4 players local coop in one PC possible?

I used this mod in conjunction with the steam workshop 4 player creation mod:Now patched you can open two instances of the EoCApp.exe located in steamapps/common/Divinity/Shipping/, you create a multiplayer lan game with two local players and the second instance can join to the lan game with another profile, the problem would be the gamepads controlling the same characters and it seems you can't control the game windows that are out of focus, has anyone tried this? It would be awesome if you have 4 friends and just one PC.I think with a little tinkering it could even work with this app I use to play Left4dead2 4 player locally: