i know what you mean, it would be nice to know whats compatable with the emulator, but as it stands, pcsx2 isnt really at the stage where games are playable on it, so at the moment its a bit of a waste of time, compatability is always changing.
when it starts running quite a few games all the way through (or at least most of the way) then i think its time to start compiling a compatability list.
atm about 5-10% of games go ingame, and thats at most, the rest show up to menus, if that.