[url=http://yugioh.wikia.com/wiki/Ultimate_Machine_Union]Or I could stick to the name it already has.[/url] But it's not really a custom card, so I guess it might not be allowed.

And I can't really see why I'd want to come up with a different fusion card, to be honest. Unless it were a clone of Future Fusion or that stupid Shadoll Fusion, I can't really see anything I'd want a fusion card to do. And in those cases, it'd probably be a bit broken.