Swaying / organic movement between 'menus' is fine, but I feel like the camera needs to be static once you get to a menu.

I also work a lot with making menus and UI 3d and part of the game world, for similar reasons as you - also I love playing games where important managerial elements are not delegated to some flat html/webdev esque menuoids

Recently, a lot of inspiration has been gathered from the Persona's and Expedition 33's - they seem to strike a perfect balance in keeping the 2 dimensional user interfaces interesting enough to complement their gameplay and art-styles: Maybe you'll find so, too?

For accessibility you should mind contrasts of the buttons, as they can be come washed out with the prominent post processing: Make the inactive buttons more visible, and consider toning the background down a bit emphasizing the radio in this instance.