I would suggest something like:
C-x g c = clone-buffer
C-x g d = diff-buffers
C-x g f = fit-frame-to-buffer
C-x g h = hexl-mode
C-x g i = insert-buffer
C-x g l = font-lock-mode
C-x g n = rename-buffer
C-x g r = revert-buffer
C-x g R = revert-buffer-with-fine-grain
C-x g t = toggle-truncate-lines
and so forth.
Please, no, absolutely not.
You can do that for your own use.
If zillions of users end up using exactly that
for a considerable time, then emacs-devel can
think about giving prefix key `C-x g' to Emacs
that way. Till then, no, please. wAGNI.