Can't say I agree with everything here, but he does need his weaknesses to be more pronounced. That said, even though Q on a 4s CD is stupid, it's suits the character so well. His theme is a manic bomber and so he should have some spammy-ness to his kit. He's certainly not getting that out of W and E. Maybe an ammo system? Reduce his bomb damage by I dunno, 25%, when he has ammo stacks available bombs deal normal damage. Could even play around with it visually, make the low damage bombs appear broken, defective like.