Honestly super armor wouldn't fit his concept. His high overall movement speed allow him to play a rather effective bait and punish game, as well as allow him to never really be out of position to take unnecessary hits. Giving him super armor would just allow him to play a bit riskier up close, which wouldn't add much since he already plays risky in the first place with half his moves having no range. Because of this, even though it's nice to have super armor on his ball moves, it doesn't really do anything for him in the end unless you gave him a ridiculous amount, and I wouldn't want that to become the focus of his play style. Homing attack seems like a move that's hard to balance, but if I were to ask for a a buff, it should either be faster starting up so it's more reliable in combos, or have less recovery frames so that it's better for punishment and pressure. Down smash just needs a lot of things changed about it period. And like I said, neutral air should have a bit more knockback, maybe even hit at a steeper angle to aid his gimping game. Other than that, Sonic has a rather solid playstyle in Brawl. He could rack up damage decently, play effective bait and punish games with his run alone, and had probably one of the top 5 recoveries in the game giving him strong survivability for a middle weight, but his move set was rather horrible just hit-box/concept wise, he lacked effective kill methods without taking significant risk, and all of his grab options barring d-throw were rather lack luster. And for those defending up throw, up throw was good until your opponent learned to DI backwards, then it becomes just as ****ty as his forward and back throws.