Star Trek Online that aren't there yet. Ship interiors, missions taking place on board the ship, improved ground combat, diplomatic missions... it's not a difficult list to fill out. Executive producer Craig Zinkievich conducted a recent interview in which he was taken to task on several of these points, which he responded to in a fairly straightforward fashion. The short answer is that it's not a lack of want from the team, just a matter of time and resources to be invested.
For example, as he points out, ship interiors (a much called-for feature) can post a slight problem due to the nature of the ships. Galaxy-class starships are the size of a small city, so they want to incorporate the feature in a way that makes it a meaningful use of a player's time. The interview covers a range of topics from exploration and diplomacy to shoring up the weaker points of combat (mostly ground combat, as players would expect). Take a look for a few more ideas about the future direction of Star Trek Online, up to and beyond the upcoming "Common Ground" content patch.