I just finished this show.
When [hide]all the people started dying,[/hide] the ending became pretty obvious, although I didn't want to think about it. Toma, Leader, the Chief, and especially Serizawa Sr. (don't know his name) acted pretty darn well. I loved all the tie-ins and continuities the last episode had with the opening and the rest of the sho, although I didn't particularly enjoy the end.
I like the show in general, I guess, though it dragged on toward the end. It was depressing and optimistic at the same time.