Hey Frogboy, I'm excited to see a working multiplayer build, and these game modes sound exciting!
One thing I do think would be good though is to have the LAN enable again.
I know you want us trying out the online multiplayer to make sure it works, but it seems that in this last build, when the internet version didn't work, everyone just stopped playing for the most part. I know I haven't played much at all since the first week it came out simply because I couldn't connect to very many people, and it was frustrating spending more time setting up a game then actually playing. AI skirmishes can get old pretty quickly (although I can't wait for single player mode)
Maybe you could make a game fix afterwards if the NAT still isn't working?
Just a thought!