I thought the attempt at a mindfuck ending was a bit weak because 1) it was obvious from the beginning it was going to be that way and 2) despite hints, it still seemed out of left field. Satisfying enough, nonetheless. Despite obligatory random mecha sequence.
Also Popo's part of the plot went off with a whimper because he's basically just Gendo Ikari
and shitty planning skills, for instance if Gendo neglected to unload Ritsuko's gun