What a first response to start off this game jam! :D
Very grateful for yo taking the time to really dig into it. Sorry to hear you were injured during the process! We should maybe have had both epilepsy and scalding warnings. Quite a log of lightwork going on.
Camera management is always a tough thing in games. We used what we called "camera anchors" which consisted of an Area3D for detecting the ball entering a region and a Node3D to which the camera then would tween to. It tweens with different duration based on the velocity of the ball when it enters. It turned out quite OK I think!
We tried to keep this jam a bit relaxed, but got a bit worked up in the end anyway, but we thought that we'd rather have just a few levels, leaving the player wanting more, than going all-in trying to make too much of it. Glad to hear you wanted more, that's really nice to hear!
I think you maybe had the exact same thing in your entry, ~5 levels with much potential left untapped!
Thanks for playing and all kind words!