There would be skill in getting the smash ball if there was any sort of method to the way it spawns other than "random"
It can literally spawn on a character there's really no skill in getting it there.
But yeah they're hideously OP is probably the main reason to nuke em really, even more than randomness. I'm pretty sure some are literally undodgeable.
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I tried to have a fierce rivalry with SuperNiceDog, but he made me look worse than a GameFAQs Contest!