Has very little healing so far if you ask me. Sure my character is only level 15, but I dunno, right now it is not living up to my expectations. The dual wielding is stil neat and all, but there may be a bit lack of punch with how Mercenary rolls. I dunno, maybe it will change at higher levels.
I did my very first flashpoint (dungeon) today called The Black Talon, a not really that hard encounter in space. The flashpoint was fun and the people were nice. I even made a friend that got added to my friendslist. Got some nice loot that upgrades my character perfect, so in all, a fine evening.
One of the fun things about SWTOR is the story telling and progress. Due to the voice-acting of all the quests it is a lot easier and fun to get connected to your character. Although I can imagine doing the same quests again on a different class can get annoying very fast.