What I liked about this episode was that, just this once, our guys unequivocably lost, which doesn't happen often on TNG.
That's a good point; I didn't pick up on that when I watched the ep.
What I liked about it: it was almost completely focused on characters and their arc/backstories. If they had left out the T'Pel storyline, it could perhaps have been even better (since there is a little flaw in the logic of her fake death anyway).
My full review is here