I acutally like Yoshi's Brawl incarnation quite a bit and am pretty happy with him in almost all respects. I would, however, like it if he had a better shield, a faster grab (if his standing grab was as fast as his pivot grab, that would be great) and possibly another kill move. That being said, his move set so fits him that I don't know what move I'd be willing to part with in order to make way for a good kill move. Perhaps his Yoshi Bomb would fit the bill if it was given a huge prioriy buff and made to go through shields. Then again, if that was the case, the Yoshi Bomb might be too good, but other characters have broken moves, so why not Yoshi?