My number 1 player used to be Holotor. I was always excited when I saw him killing people in the public wushu room and when I fought vs him I didnt want to make him disappoint in me. But later I was disappointed in him.
As for aikido based mods I think Cold is OP.
And Largekilla is also very cool. Once I randomly went in a quick aikido room and he was streaking there with his alt. We had pretty much fun there and I still have some cool replays from that room.