The thing I want to see the most is a movie based on the early 24th century. No one really knows what went on during that time period, except that there was something major that happened between the Romulans and the Federation which resorted to a treaty and for the Romulans to go into hiding until their appearance in late 2364 because of the Borg.
We know about the late 23rd century, thanks to The Original Series and movies, and we know about the late 24th century, thanks to TNG, DS9, VOY, and the TNG movies.
Explore that fuzzy period between 2300 and 2360 or so, right before the events The Next Generation series.
How did the Federation meet the Cardassians? You could do a war story about the Cardassian wars.
Or perhaps do a story of a starship set in the Dominion war era of DS9.
There are plenty of stories out there to be told, but to be honest, the direction this new movie is trying to take is something I don't like.