In the June 5th Dev Stream Paul mentioned that they would like to have full-scale creature animations for all the races, but just haven't had time yet. The Terrans were just the first one that they did. Their Cinematics Department is quite busy right now.
Let me make this clear; what I'm hoping for is multiple animated creatures for each race (at least the human-like ones), and multiple animated robots in the style of each race - even the Terrans. I would also like to see lots & lots of interesting 'sexy' backgrounds with landscapes, operating centers, offices, courtyards, etc.
The reason I suggested this as a DLC is that these additions would not really affect game-play. Non-Founder players (I'm one also) could decide for themselves if they wanted to expand their GalCiv3 experience in this direction or not.