Well, CO is still in development hell on the 360 because of Microsoft being impossble to work with, and if/when it happens Xbox and PC players will be segregated and unable to play together. Which sucks.
I have little doubt the same will be true for STO.
If Cryptic is going to release a console version, it should be on the PlayStation 3. It's a more ideal platform. Less restrictive than Microsoft when it comes to content, has a rapidly-expanding playerbase... I mean, look at Unreal Tournament III. Not a successful game by any means, but it has an active modding community for the PlayStation 3, and it's supported by Sony. Hell, I think it even has a map editor.