It's a bit more complicated than "longer confirmation times" since normal nodes will not relay them. Realistically, production use of non-standard transactions

It's a bit more complicated than "longer confirmation times" since normal nodes will not relay them. Realistically, production use of non-standard transactions is unwise, but we'll make anything standard that people have a usecaes for and tests for. ... though in this case, you'd really want to use a script like I described instead of inefficiently using multiple keys per player.