1) When I get invaded, I get a confirmation dialog.

2) When I get conquered it's a VICTORY! ... for the other guy.

3) Nothing is clear.  There's stuff all over the screen and almost none of it is explained.

4) Sometimes invasion causes the game to get stuck.  Then the next action button no longer works.

5) It's totally opaque before you invade.  Send one transport to one planet.  Shake the magic eightball and see what pops out.  Why can't I see what's on the planet before I transport to it?  The percentage is nice once you get there... but even that isn't really explained all that much.

The system feels like an afterthought.  There's some history there, I understand, but it needs work.

(Sorry to be negative all the time, btw.  Just trying to be helpful).  It's a fun game, just trying to iron out issues like this before release.