Bats (leader/tactics ala first few JLI issues)
Cap. Marvel (power)
Flash (John Fox) (speed/communications. keeps everyone one the same page)
Canary (experience/martial arts/Bats lieutenant)
GL (Guy) (most powerful weapon in the universe)
Hawkman (warrior, the asskicker, helps keep Guy in control)
Firestorm (transmutational powers)
Atom (brains)
Plastic Man (deductive abilities/FBI liasion/levity/knowledge of criminal tactics)
Power Girl (power, completes a one/two punch combo with CM)
Capt. Atom (military liasion/tactics/quantum powers)
Animal Man (just because)
Oracle (info/communications)
Steel (John Henry Irons) (brains and brawn ala Morrie's JLA)
Raven (mystical/just because)
Guardian (Jake) (because I like him)
Other (rotating spot)
I didn't see Dr. Fate listed, but he's one I would add for mystic abilities.