When I reviewed the Season 2 premiere, I was very mixed on where Gotham seemed to be going. Throughout the first season, it tried to take itself somewhat seriously, and I held it to those standards because of that.
Things seem to have changed. The last few episodes, the show has decided that it wants to have fun with its concept, to embrace the ridiculous. This show has always been a little silly and stupid, but now it's actually embracing that fact, which is not a direction that I was expecting it to go. While that makes for a much more enjoyable show, it also makes it harder to talk about. It's similar to trying to review a comedy, where trying to say what makes it good runs the risk of just repeating the jokes, trying to explain what makes Gotham so much fun runs the risk of just writing a recap of the episode.