This is a bit late but I think you should go for option 1 for hammer bros because that seems much better for a final smash but if it doesn't work then option 2 seems fine to me.
the poll wont end until i make one of them. One day, when i have spare time, i'll look at the poll and see who is in the lead and make them. I'll then shut down the poll and make a new one after i complete it =D baby bros are gonna need a size mod though, do those work for ice climbers?
Yes it does nana just shares the same animations as popo for the most part so it will work out.