If writers actually pay attention to what her top villains are capable of, they are impressive. A brilliant archaeologist cursed into being a monster (who subsequently becomes something that can stand up to her in a fight and whose knowledge of ancient artifacts becomes more dangerous when paired with her insanity), an ancient sorceress with divine blood running through her veins and an army of beasts at her disposal, a warped telepath capable of causing trouble for a GOD, a digital goddess who can screw around with any system she gets access to, etc. People see a massive Hulk level threat and will know he is powerful, but none of that means anything if he is a dud as a character. Do we need two hours of Solomon Grundy punching things and spouting nursery rhymes? I'd rather have a good character and an actual plot.
She doesn't really have too many Mongul types in her rogues gallery. The few that she has like Genocide are terrible and would be a waste of screen time. The First Born might work, but I'd rather see some women. We only just recently got one of these films with a female lead villain in Hela, and if she wasn't played by Blanchett the character would be a dud. This is an opportunity to work on that.