Next season is apparently set in the future with Discovery.,
Seems awkward, it could work, as several episodes across the series’ have other ships travelling through time and being the function of those episodes. So using it for the main ship as a story, doesn’t seem too annoying.
But considering the bull in a china shop method of lore crafting, there’s no way they do it in a sensible manner.
It’s going to require a menace, it clearly won’t be the federation they’ve just saved, they can travel to any point in space, presumably have some way to send the last signal (which I assume is a part of the suspense)... the dominion is ruined, Borg in disarray.
Assuming literally nothing changes between the three main powers, and the 50k distance from the alpha quadrant, that puts them in uncharted space nearby the Borg remnants if they have some how recovered at all.
So, clean slate it is with some sprinkled fan service. I also have no idea what they expect to do with her mother’s mission, as presuming she has to do all that work again, they can’t interfere?