Most of what works in the Star Trek movies evolve from what we know about the characters. Kirk’s love for his ship and history with the Klingons, Picard’s history with the Borg, Data’s struggle with emotions, that sort of thing.
What character threads from any of the series could have been picked up and expanded on in movies?
A movie about Admiral Vance’s pre-DSC experiences would be great.
I’d like to see a mini-series about the immediate post-Burn crumbling of the Federation. Tied to how, while much smaller and muted, the Federation still went on.