The only reason why I wouldn't want Schelotto is because that would mean we'd revert back to a 4-4-2 right? I don't think he's the kind of guy that could play in the top trident in a 4-3-3.
I like Schelotto, I think he has a bright future ahead of him, but the team comes first and we must use a formation that works for us and not keep switching formations because we sign one player here or there. (Unless we sign a superstar, etc.)