I disagree, I find that learning the new game mechanics was part of the fun of the game. Also, the new camera is fantastic and feel so much better to navigate and I didn't get your problem with the camera flipping up once. The only difficulty change I noticed is that the bomb in the vent is way more common now, which is a welcome change since it was so rare before. The only thing I noticed that I do agree with is that sometimes the robot can topple over just outside of the camera's view which can make it impossible to pick back up, but that only happened to me once in the new update.
I agree, trying to work out and learn how to manage everything to survive in the game was a lot of fun. The increased difficulty is great too as in the previous version I managed to beat every night without even opening the camera. Overall, I love this new update and look forward to future versions.