The Baccarin choice is awesome.
Of course instead of just repressing stuff the Romulans have had centuries (milennia? what exactly is the time frame here?) to learn how to manage their strong emotions.
Even though one of the Free Chicken Eating Vulcans in ENT was a dickhead it's not like the ship didn't function. It functioned better than Klingon vessels with everyone assassinating each other and throwing half eaten targ bones on the floor.