I have found one big, big thing wrong with the Romulan content:
You only realistically have one ship to choose from when you rank up. It's really grating having to go from a Mogai (basically an escort) to a D'deridex (a whale). That sort of play-style shift is just too much, especially for a new player. They throw you a bone with the T3 ship from the anniversary mission, but otherwise you are stuck. Sure, you could pay the still-freaking-ridiculous dil prices for the allied faction, but there is basically no chance of having that much dil before lvl 50; and at any rate, that much dil could get you A LOT of zen/rep/whatever.
Yeah, that's a damn bit of an annoyance with me too. I could see them requiring "X" faction's bridge officer on your crew to get "X" ship, but 40,000+d for lower tier ships? Fuck it.