Heh multiplayer tests aren't good ideas at this stage, as they bring competitive streaks out of the community and immense whinage.
The game hasn't really been balanced yet for what we know, they might not have even completed the other two races so I don't think anyone needs the excessive tears that it would bring on.
" omg my capitol ship can't pwn his capitol ship, omg i spent 200 crystals on this why can't it win ? whars me insta-gib buttonz?!"
Seriously though - I think the game needs a good long development time before they let players be able to blow each other up, as you'll get alot of annoying junk being spammed out, and alot of personal opinons which have nothing to do with balance or testing.
We're still pretty much testing the core gameplay mechanics if you think about it, they've only just given us new logistics and such - When the core gameplay elements are stable and completed then I think it be time for the other races to be included.
i'm just hoping they can add nice variety, and make each one very different not just in visuals.