Hello Phoenks! Since you were an avid fan of composite human, why not join my composite human tournament with my heavily updated composite human profile (it even managed to get the seal of approval from the staff at joke battles)! You can make match suggestions there too if you want some good old CH fun lol.
But from what I know he isn't missing too many abilities that I can remember off the top of my head.
The first half of s6 he didn't have portal travel so he was kind of stuck in normal reality. I can't really remember anything crazy in s6.