1)When it's a sudden death match, just restart the match as a 1 stock match~
2) well, it's up to you guys. if it was a tie stock game then, just restart. Otherwise, it's a tricky matter, so, I'll it's up to you guys to decide. If you need a second opinion on anything, I'll be happy to provide it~
3) No, Mii Fighters aren't allowed, since they're 'customized' fighters.
4) It's been already explained on the first post, but I'll say it again: a single elimination match, best of 3 rounds, 3 stocks, 7 minutes, in a Omega stage match~