If I was you I wouldn't do it.
1. If you keep your finger on the lock screen by mistake on iOS 15 nothing happens. If you hold it on iOS 16 it automatically goes into wallpaper customisation.
2. Every time you restart your iPhone, the transitions are smooth. But on iOS 16, there are frame drops after you enter the pass code. Maybe this is not a bug for many people if they don't restart the phone. To me this is the only time is happening.
3. The notifications are coming from the bottom. And if they go into notification centre, reveling them might cause the glitch I showed in a previous post above.
4. No more live wallpaper.
5. Apps open slower. Not measurable, but my muscle memory can feel it.
As other guys advice me here, wait for a stable version of iOS 17. That may be released on September 15th 2024

)
PS. The battery on 16.6.1 is fine for me. Also the signal strength.