let us just look at the maps...
first this tiny cellgames map, with 10x8 meters playground... and a underground path... to the bigger cellgames map, with much much more air to move (thx to downsizing the models) and the upcoming and latest (it looks actually more like the cell games from dbz than the other maps) cellmap... oh and the other cool maps as well...
the models are superb too, animations in the adv melee makes look other competitors like crap... adv melee will be the nearest approach to code a real melee fight in a fps...
and the powerstruggles, blockstruggles, throws, walljump, beamjump, etc....
much has been done, but the future will be even better