Firstly theres no classes at all.
Just ranks that are the exact same as bf2 ranks but without the specialish ranks (the ones that require badges to get, I'll try put these in a future release)
Ive copied the xp table directly from bf2 and theres a cvar to control how many points u get per kill. Normal bf2 has 2 points for a kill, and 200k points for the highest rank. On default settings you need 20k kills to reach top rank on mine so 10points per kill.
Theres also badges (can be turned off) which give you some upgrades/powers/freebies. 6 badges, 3 levels for each (basic, veteran, expert)
Ive already got a basic website
http://bf2ranks.deluxe.net.nz but it's not exactly finished yet.
What do you mean by the psychostats thing tho? Do you mean like web viewable stats thing that wc3 has, or a full global one for all servers running the mod? Global one would be intensely hard. Would need to remove the xp change cvar and probably make all servers connect to a single sql database.
A web viewer for just a single server wouldn't be too hard tho, need to convert rank saving to sql, it's just vault atm. On my to do list...