Why do many of them need to be on the small screen in the first place? You are going to interface the camera with a computer at some point so why not offload the menus for the rarely/never used settings to a PC or tablet?
While not having used this camera, I'm not going to comment on the merits of its interface, I don't really see why you think that the mere existence of an interface on the camera to change these settings harms you. If these settings really don't need to be changed often (/ever), then bury them in some sort of "advanced settings" menu that you can then ignore. Yours is the same mentality that we see from a lot of UI "experts" -- they proclaim that the way they want to use a product is the right way, and prevent anyone else from doing something different. Witness the whole GNOME interface disaster.
If the menu options get in the way of changing commonly-used selections, then the solution is to adjust the menus so fix that, not to remove everything that sjbe doesn't use.