I have to admit, the lag has been painful and I've only been disconnected in one invasion, but the fact is, I've been in at least 10 and not once from any of those did I get enough EXP to get a level up. I got the badge the first time, but other then that I didn't get anything out of it.
I think if we do the new ritki invasion, there should be less spamming of enemies, and more AV style enemies. Have like...the giant mechs, but set up more like Babble, incredibly high defense and HP that would take two full teams to take down.