I would like to see a Titan series, based around the events just after Nemesis, involving the battle for power on Romulas. The best TNG episodes always included the romulans.
Or possibly a post dominion war series, with the Federation having to rebuild after the losses they suffered.
I really believe that if that were to be the preferential idea for this new show by the creators, it would need spice in the casting like Taylor Swift or Summer Glau.
Whom would you like to see in this TV series of yours?