Hello,
So, regarding this topic, there is this thing called FivePD. Its like a very simplified version of LSPDFR that you can play with your friends. I do know that the Devs of LSPDFR probably will never expand into multiplayer LSPDFR, and I completely agree with that. But that is just me. But yeah, FivePD would be the place to go if you want something like that.
Hope This Helps!