Which is still completely legit, cause Sheik HERSELF has moves who are all made up. And for those who payed attention, Sheik was trained under Impa in OoT. So her following up Sheik isn't only a matter of relevancy and importance of the character, it also makes complete sence.
Every move Sheik did was completely made up, maybe except for Vanish cause thats basically all she does.
![Roll Eyes :rolleyes: :rolleyes:](/styles/default/xenforo/smilies/rolleyes.gif)
Impa has actual abilities of herself, with the barrier and magic ball attacks. That's already a lot more than Sheik, plus she could have the Deku Nuts for Down B. Sheik couldn't have it, cause Sheik would always lack a Down B attack.
So yeah, mix up her Deku Nutting / Vanish abilities with a chargeable magic ball similar to the needles for B, and give her the barrier for Side B, and we have a mixed up moveset already for Impa. With multiple appearances even. Now make that lame Side B of Sheik's Impa's grab (including tether / Z Air) and we have a much improved Sheik. Change up a few moves but keep Sheik's tilts and important aerials and we have a character much improved.
She could also have a little mix of Lucario and Lucas's playstyles even if they wanted. That's why she could perhaps be a character with different stances during a fight. She could mix up palm fighting (thinking of it being similar to Wang, from Tekken) with a style similar to Sheik's and a style with her magic, ala Lucario / Lucas. This would make Impa also a 'semi-transforming character' that would be a nice throwback to Sheik. Her being an actual transforming character and all. Tilts and Smash attacks would be the only attacks which would change though. Aerials and specials would always stay the same.