Wu is the ugliest darn toon in the whole kit. Makes Gormek look dreamy. Just sayin a haircut isn’t going to cut it.
ahem.
Either way, I’ve seen people learn to be successful without him and feel that the highs/lows may be offset by a better average score. I’m just not strong enough to NOT use him 
No nerf needed. Also? I’ve heard that Greg’s crit chance makes him a “Rich person’s Wu Kong”… any truth to that?