Why are we even banning custom specials or coming up with stupid arbitrary crap like 1111 or 2222? Why not embrace the fact that we can replace garbage moves with good ones? Sakurai actually did you a favor.
This. The Miis are different than the rest of the cast. Why shoehorn them into the mold that the other characters fit into? The Miis borrow a lot of similar moves from other fighters, and combined with their own unique moves, the total package of any given Mii Fighter is far from broken, I think.
I feel like Mii Fighters ought to have no restrictions AT ALL, or at the very least, just have standardized weight/height. Of course, Equipment would also be banned. But, I feel like people ought to be able to use any combination of special moves they like. I understand that bringing your own Miis can cause logistical problems, and that any such Miis would have to be checked by the TO and watched closely to avoid cheaters, but I think that might be the only hurdle to jump.
I don't think the weight is a big deal, either, but I know height changes the speed of the character, which is a much bigger deal, imo. Heavier characters just take more hits to die, and lighter ones take less hits, but changes in inherent speed that last the duration of the match would be the hardest thing for opponents to adjust to by far, I think. Even so, I'm not totally against allowing different heights/weights, even knowing the above.
Limiting the Miis to 1111, 2222, etc., just seems to go against the entire point of the character. I feel like the custom specials for the Miis are even more essential to their existence than Palutena, or any other character.
If we were talking about banning or unbanning items, I think the burden of proof ought to be on the "unban" side, since Items have proven to be ban-worthy time and time again. BUT, since we've never had a character like Mii Fighter before, and since it's a trio of characters that aren't even used all that often, I feel like the burden of proof needs to be on the "ban" side. Let people have their Miis and only restrict them accordingly as needed.