I would like to request an option to be able to remove from the Camera UI the selfie switch. This button lies in a sych a location that it is extremely easy to toggle it, usually in unexpected moment, when one focuses on objects being photographed.
When the switch is hidden Camera app shall only use the back camera ignoring presence of the selfie cam.
While that thread is indeed called “camera app wishlist”, it is really “camera middleware wishlist”, so i’d argue that this purely UI feature is not suitable to add there. It is something you can just do, completely unrelated to that work. And when i say “you can just do”, i mean literally; the app is now open source: GitHub - sailfishos/jolla-camera: Camera application for Sailfish
Add a setting, make it control the visibility of that UI element.
Yes, this has crossed my mind. Although I have no working environment suitable for SFOS SDK.
You might not need the hassle of an SDK and all that . . . If it’s in the qml – and that seems like a good place for the UI code – and if you’re feeling lucky then maybe you can find the code of interest in plain text and just hack it right there on your phone and try it on for size. (Maybe you back up some stuff if you don’t feel quite that lucky.) That would definitely be the punk rock thing to do. You could quick-and-dirty it and just remove the offending button and see if you like it, then pretty it up and make it configurable. Then make a PR (or MR or whatever the kids are saying these days) if you’re feeling lucky and generous.
If you succeed, then maybe it’ll inspire me to get off my butt and fix something, too. 
It’s not about feeling lucky. I just don’t release untested code.
Then test it on your device, which is what they suggested.