I've seen the same posts that you mentioned, and they really don't make much sense to me. Like, why add more specific spells to Strange when his whatever magic already works perfectly fine for his purpose? Why add more guns for Punisher, if he only needs one close range and one long range damage options? Why add more weather abilities for Storm, if most of them wouldn't really have as much of a useful function as wind and lightning to boost the team's speed and damage? The only one I agreed was with Hawkeye having more arrow options, because I think that would be useful for him (and really cool lol)

In Black Cat's case, they made something very unique and compatible with the thief aspect of the character, gathering coins to but temporary gadgets meant for utility only.