I imported my Mass Effect 2 Shepard, which in turn was imported from Mass Effect.
The obvious benefits of starting a New Game+ is that I'll keep my level from the end of Mass Effect 3, but I've been hearing that starting a new game+ with a character that was previously imported, will cause you to lose some of the benefits you got from importing your character.
What exactly will I lose vs what I will gain from starting a new game+
The reason I ask is because levels don't matter so much to me, since by the time I finished ME3 I had all the skills I wanted.