IMO I think where WotC is generally doing a good job of releasing material at a good pace is the rules options books. Too many rule options can make it confusing, especially if you’re using physical books.
What I would have liked to see was more adventures being released, but not the big AP releases but rather a short scenario that could be played out over 3-4 sessions. I liked having stuff like that during the 2e days. Since they don’t really do softcover stuff, maybe DDB could be an appropriate place for that sorta thing? If I’m not mistaken, they did release some surveys a couple months ago that seemed to be about this sort of thing so maybe it’s on their radar as an option. I’m aware DMs Guild is a thing, but it also can be difficult to find quality stuff there since there’s no form of quality control in what gets put out there.