Upgrade if ya wanna upgrade, don't if you don't.
You'll gain:
- Always-On display
- Action Button instead of your ring/silent switch
- Apple Intelligence
- Camera Control, as you mentioned
- 48MP camera (vs 12MP on your 13 Pro Max)
- 5x zoom (vs 3X on your 13 Pro Max)
- 2000 nits peak brightness outdoors (vs 1000 nits on your 13 Pro Max)
Plus a few other things like minor screen size bump (0.2"), USB-C, lighter weight, Dynamic Island, various new camera features, SOS via satellite, longer battery life.
As for me, I'm still fine with my 12 Pro. I figure I'll get the 17 Pro.