Nice, this was a sorely missed feature from the unity transition. Will be adding this

Hopefully this gets integrated into the engine.

I went and gave the dev a buck for their service

I saw a video from Gamesfromscratch on the Phantom Camera add-on and it had a nice panel for the camera view instead of PnP. Certainly seems like room for growth built into the editor.

This looks way better than the built-in version, imo. If there isn't a pull request already, I hope one gets made soon! Not to replace the current version, but maybe a setting like "Set camera preview to picture-on-picture"