Well I enjoyed GC1 a lot, so I was excited to play 2.  I love the way things are looking and generally I am very happy (though I am a little worried about the new weapon type thing, but we will see when it gets more playable.
I do wonder though: is there any talk of hotseat or internet play?  Hotseat in MOO2 was a lot of fun, so if possible, that would be an amazingly cool thing to have (since my friends and I already spend a lot of time comparing notes on our Empires).  
In turn-based games, there is always the issue of people taking too long, but a tern timer that insists on a maximum time to complete a turn could solve that.  Just my top wish for GC2!