Please no. Beastball as a special move would be the extremely spammable and effective. There's a reason its an item. If it's nerfed to not be overcentralizing, it likely just ends up a baseball toss with a flowering effect, which is redundant given Vegetable.
Why does the Hammer music override apply during Spirit Battles? Considering the ones with Hammers usually extend the Hammer duration, it makes it very hard to appreciate the music choice.