Problems with Retroarch under Chimera

8BitDo Ultimate (wireless) Controller does not work in Retroarch and SteamDeckOS sees it as an "Xbox Wired Controller"
There is no default controller Hotkey to open the Retroarch menu and some settings will not save. I managed to wrestle back most of my control over RetroArch but only in desktop mode, it's as if GameMode is hardcoded to override the retroarch.cfg.
Some directories are in a locked location and others are in home/gamer/.config. Why not put them all there?
I can't get MegaBezel Shaders to work, I can't choose my own cores, N64 game won't load, and I can't enable Ozone without it defaulting back to rgui.
I don't understand why ChimeraOS seemingly takes so much control away from the user. Unless I'm missing something, I find the conceit very off-putting.

Also, not every game has a complete set of graphics for the banner/poster/icon...
The webUI should allow you to upload or drag&drop your own custom graphics in these instances.