I was about to say, earlier we were talking about how the Wicked Witch was being called a literal who by some people, so it's like, even though the Wicked Witch is overall known, I don't think she's going to give out as much attention as Marcy, Raven or Scooby Doo.
That being said, as I said recently, one of the things that can really sell her to people besides her moveset/gameplay/whatnot is her potential costumes. She has variations from other Warner series like DC Comics(with a version that fought against Shazam), Supernatural and Scooby-Doo(there was a Wizard of Oz-based episode) and there are tons of witches from the other Warner series she can get costumes or variants from.
She's one of the those characters where you look at her main appearances and may not see much(like Miss Gulch), but then you look at all the stuff around her, see the number of characters similar to her and that she herself is part of some of them because of her being public domain and then suddenly, she has some great potential with what they could do with her costumes and variants.