Ultimately, I think the SS story is still being hashed out, so I wouldn't make too many assumptions until we have a good idea of what their (Marvel) actual plan will be. I think the focus will ultimately be more on X-men than F4.
Ultimately I think what we’re seeing is that Marvel’s success was based largely on Feige having a winning strategy of working with directors and deftly adapting to circumstances- and a LOT of luck
It’s too big for Feige to do by himself anymore- and now Iger is feeling the need to be seen as more hands on
[where he was content to stay behind the curtain in his first iteration- and he’s smarting from losing the strike battles- his missteps seem to be increasing
Which is not good news for Filoni/SW either]
Marvel is trying to be expansive (which makes sense for both content and business), but feeling the need to have central narrative as important as individual story - that seems to be the thing complicating their storytelling as much as anything but it’s probably unavoidable as well