I would like to suggest something regarding the "Battery Saver" mode.
It would be very nice to have an option to automatically change the screen resolution when battery saver is on. The same way other options like "Turn off always on display" or "Limit CPU speed to 70%" exist.
The scenario is as follows : Normally you would have your phone on the highest resolution, and when users want to activate battery saver, it gives them the option to set the resolution to a lower one instead. That way, users can save more battery, all while being easier to access.
In my case on my S22 Ultra, when I want to save battery, I would have to turn my battery saver, and then I'd have to go and lower my resolution from QHD+ to HD to save even more battery.