Damn. I looked at the thread and thought how many times I've thought this would be fun but wasn't sure if there was enough fans here to make it work. Plus wasn't sure how to pull it off either.
Definitely interested, I've been a fan of the series from the Original "UFO - Enemy Unknown" game (and its sequel "X-COM: Terror From the Deep" and "X-COM: Apocalypse") to the 'New' UFO series (Aftermath, Aftershock, Afterlight). I have actually bought all 6 above mentioned games, and played them a fair bit.
The setting you have put up looks good and the new take looks promising. I suppose a lot of threats are waiting ahead then. Hmm. Well, I think this would be a lot of fun to play along in.
I'd volunteer a strong Psychic potential human, but I figure it'll be a fairly long time before Psionics even become a real factor for the recruitment of troops. Still, the thought there interests me the most still. I like the idea of a human that is outright damn stubborn, and might even be seen as a less useful squad member because of not being so physically 'buff' and muscular but perhaps alert and aware to a level that has made him useful for 'scout' or 'sniper' duties before psionics come up.
Of course, also interested in a variety of other roles, from a weirdo fighter pilot to an eccentric XCOM scientist, to more unorthodox options as well. These would be backup ideas, as said, but got a lot of them.
Anyway, a great idea and figure giving this a day or two, you'll draw out the other X-COM series fans to come at least take a look.
Not sure if I'll be able to play given the amount of games I already got to think about but I seem to be keen on picking up stuff that interests me and then sticking to it. Even so, figure would have to hear what the Storyteller is looking for in this.