WandaVision and Agatha All Along are the best MCU TV series so far, but they also shared Jac Schaeffer as head writer/show runner. Schaeffer started on VisionQuest, but left to focus on Agatha All Along and doesn't currently have an MCU project she's working on (publicly).

It looks like VisionQuest will be the second prong of the WandaVision sequels (Agatha All Along being the first). I'm guessing it will come together in a fourth series, possibly with Ironheart as part of a Young Avengers storyline. Although the storyline also leaked outside of TV with Multiverse of Madness, and we have a placeholder film between Doomsday and Secret Wars. So maybe we can sneak Young Avengers in there?

If the Young Avengers lineup is Kate Bishop (Hawkeye), Kamala Khan (Ms Marvel), Riri Williams (, Ironheart), Billy Maximoff (Wiccan), & Tommy Maximoff (Speed), then each Young Avengers would have had a TV series "prequel". Then Young Avengers can be a soft sequel to Multiverse of Madness. Although I think it would be a struggle to do a Young Avengers film justice while continuing all those characters stories. But a TV series could probably do it, probably multiple seasons.