Ahem, we have 8.
Sorry, was at work and I just couldn't remember (ET as 2, XCOM had 5, I knew AI had at least 5, I almost put 6 down, but decided to play it safe, and wrong).
More then welcome to help if you're bored...
I have seriously thought about offering, however, coding wise, I know next to nothing. Computer wise I like to say, "I know enough to be dangerous; to the computer", an exaggeration, yes. I am not somone who is a self learner, hands on and by instruction is the only way I learn. The only skill that I could possibly be of use would be limited to beta-test, help with the fiction/UFOpedia and design/balance.
If I may be so bold, my first thought of the basic soldiers (without armor on) in the inventory screen was that they were uglier grahic wise then the original XCOM, but then I told myself to 'shut it', because I knew I couldn't do any better (the armor suits look much better). I once tried to create new units for CIV 2, mistake.
I have tried to help here. I have posted questions and made points that I thought would help (I posted with screen shots about how my "actors" can get out of synch graphically, but that thread didn't get much of a response.