One thing I have noticed and not keen on is the fact that when you load a game, even if it was saved while paused, it just starts running. I often start loading a game then go off to do something else while it loads. For this reason, I always hit pause when I save, so if I'm a little longer getting back to my loading game it doesn't matter. Since Showtime however, even if I hit pause, when I load a game it is not paused, but running. Just a little peeve, but something that's new with Showtime.
Plus not sure if it's the game or the fact that up until Showtime I've been concentrating on the clones challenge which has needs static, but it seems harder to keep my Sims happy. Although, this could also be due to the fact that I moved 3 Sims into a cheap house with only basic furnishings so they sleep poorly, have food cooked unevenly and all the leftovers taste like fridge lol