Why not add a TCP/IP mode like Dom2 has - instead of requiring everyone to be together, one player sets up a server and the others connect to him to submit their turns - in other words, a private, built-in PBW? Then again, someone's already made one of those for SE4 (when PBW was down for months on end), so I guess the only reason for adding one to SE5 would be for advertising - you can't claim to support TCP/IP servers out of the box if they're only available as a user-created addon!
