I can get behind a lot of these ideas.

While I don't think we should put ALL of the Scions in the backburner, the majority of them should be shelved. Take the twins: keep them in Garlemald for an expansion or two and when they come back, they have visibly grown out of their teenage years. Personally, I'm not a fan of either of them. I think they were made more important than they should be. But give them a chance to grow off screen and maybe some real character growth can occur.

We don't even need all completely new characters for the roster. Throw in some old characters than didn't come back after their expansions like Feo Ul or (I assume we won't see much of him after DT) Erenville.