One thing that was really noticible to me in the demo was how fast you progress. By the end of the demo I was building cruisers, and that was 30ish minutes in.
I think that's part of the appeal to console people though, I mean I used to play Civ IV games that would take DAYS to play on the largest map with the most AI possible, I don't think that'd translate well on console, especially in online MP.
I am still looking forward to this, though I expect it to be Civ IV light.
Also, I am curious to how big the maps get. Having only 2-3 cities doesn't seem that great either, but with a limit set of options/upgrades, it may be better.