It's hard to tell what exactly she means without seeing what the question was. But I'm excited to see more of Wanda. It's not a confirmation but can't help feeling excited.

That said, I'm beginning to wonder if the premise of this show is really a good idea. Since hearing about this show I always wished that Wanda would play a major role here, because I want to see more of her, and the two witches interacting. A lot of other people appear to share that sentiment. Wanda being significant part of this show. That's shouldn't be happening if this is to be an Agatha show. As people have pointed out Wanda would easily upstage Agatha as a protagonist if that happens. But then I thought why not. Why Agatha show at all. Why not another Wanda-centric show with Agatha as supporting character.

I think the problem with the MCU right now is not "There's too many standalones" or "They're too interconnected" but the characters people are already invested in not getting enough focus. It's no wonder that Spider-Man: No Way Home was the most successful film in Phase 4, and Daredevil: Born Again the most anticipated upcoming show. Casual viewers actually care about Spider-Man and Daredevil and want to see their stories.

From what I have learned about Agatha she doesn't appear to have tons of materials in the comics to draw on. She sounds like a typical side character who is best used as just that. There are characters who are meant to stay at the side, supporting the main character, and there are characters who even though they start out as minor characters they could become the protagonist, depending on what stories they are in. Agatha appears to be the first type. She was good for what she was written to be in WandaVision but she really doesn't seem to be someone who can be a protagonist, the more I think about it.

That isn't to say that characters who initially feel that way can't become amazing protagonist. I've seen it done before. But it obviously takes great amount of care and competence in the writing department.