The asteroids thing was actually not correct; that was just a bug in the current beta, but is fixed for the next one.
Regarding the resources, etc: the only way this is balanced is if you have home planet command stations on both. You do get basically doubled economies, which means you're a freaking powerhouse. Without added risk, it's basically just a cheat.
Regarding multiplayer support, it's not just lan support: direct-connection is also supported. It's perfectly capable of playing over the Internet, but you'll want to arrange that in advance. I've written about this at length elsewhere on the forums, but basically even if we had a server browser you'd likely not find many people. Given all the time zones, and the length of the campaigns, most of the time people are playing, rather than looking for partners. It's not just something where you sit down with folks for 20 or 30 minutes and then look for partners, like a pvp RTS. That said, it's a feature we're considering for the future. For now, there's a meeting ground subforum here, and IRC on the right sidebar of our website, which are great ways to meet people for a game.