Sadly this won't work for LAN party because only one person can use a library at a time. Your comment does me wonder whether this could at some point be extende

Sadly this won't work for LAN party because only one person can use a library at a time. Your comment does me wonder whether this could at some point be extended to allow you to lend the multiplayer component of a game to a friend so that you can play together. I know back in the day half my friends ended up buying copies of Starcraft because they'd done a multiplayer install at a LAN party.