More storyline content would of course be great, I enjoyed the new Dominion storyline and eagerly awaited each new episode.
But more customisation of ships would be good, currently the NX class can be exactly the same as an Ody, despite the size differences. The TOS interior has some nice touches, being able to close the Blaster shutters and being able to use Jefferies tubes
The Defiant interior is nice in that it is different from a shuttle or a larger ship.
Additional DOFF missions when onboard gives a bit of reason to look at the interior of your ship.
Another nice touch would be that if you manually Dock your ship at ESD, you perhaps appear at the shipyard or something rather than simply using the transporter as you would if you simply "dock" when you are still outside.
I agree that that these are simply nice touches and more end game content such as the fleet starbases or more storyline content is more important.
On that note I have around 150k Dilithium if needed.
Also should we all be saving our Data Samples for the starbases? I noted on the chat where someone said you would be daft to be crafting as Data Samples will be needed for the bases.