I am waiting for better support for atmospheric combat. That's kind of necressary for Red Tide campaign, including the prequel one.
Imagine that: a destroyer hovering above the city trying to protect it along with it's on-board figher wings, and player with friendly fighters blasting most of it's engines and navigation subsystem to bits, causing it to fall on the city and explode, completly annihilating it in a massive explosion... and all over the battlefield Zero-G soldiers are duking it out, and few cruisers support the destroyer, only to get blasted to bits. And that's not counting the aforementioned fighter wings.
Wouldn't that be cool?
That, and AI upgrades to make it navigate better. It would be *very* useful in, for example, above mission, or a mission that shows an attack on a asteroid fleet base. Currently, AI would crash itself to death.