Spidey had organic webbing but it’s not as though nothing of his power remained. All that really did was remove the need for him inventing web shooters. He still had all of his other powers. With Kamala, there’s nothing in common with her powers between the comics and live action. And while the personality may remain, a big visual aspect of any hero is their powers, so I’d say her powers are a big part of her especially when it came to the beginning of her story where she learned that, while she could shapeshifter into anyone, she didn’t have to change her appearance to what she thought would make her heroic to be a hero. That was a big character moment for her that you can’t really get by changing her powers.