You'll do with that what I do with most of the C-Store ships I've bought over the years: replaced them with Fleet ships.
Some of the Console set bonuses seem nice, though.
STO is about my Liberated Borg Federation Captain with his Breen 1st Officer, Jem'Hadar Tactical Officer, Liberated Borg Engineering Officer, Android Ops Officer, Photonic Science Officer, Gorn Science Officer, and Reman Medical Officer jumping into their Jem'Hadar Carrier and flying off to do missions for the new Romulan Empire. But for some players allowing a T5 Connie to be used breaks the canon in the game.
Create alts, convince yourself you're going to do something different this time - this character's not going to worry about elite STFs and minmaxing, he's going to fly a Haakona torpedo boat because it's huge and intimidating and torpedoes spread flying everywhere looks awesome, or a D'derix because it's iconic.
Then, a week after hitting 50, get bored with that and go back to a variation on the same escort setup you use on your other characters.