Suggestions for PS3 Retroarch

When I am running the Nestopia core I usually have to change my controller settings which requires going into the menu of Retroarch and selecting the controller configuration I saved.

Essentially, would it be possible to have these controller settings auto-load whenever I switch to the Nestopia core (make it default specifically for a certain core?

When I start the Retroarch menu and browse through the different screens with R1 etc… I noticed I have to keep on pressing O through all the option screens until I can return to the rom menu itself (unless I am missing something).

Would it be possible to add an option to return to the rom menu instantly with the press of 1 or 2 button(s)?

In terms of switching through the libretro cores instead of having to go into the menu and selecting the cores on the 3rd option screen would it be possible to do so from the rom menu list itself?

Basically, add the options in the gui itself, just to make it more user friendly. If this is too much trouble then perhaps put the libretro core option on the first option screen instead.