[zbuzanic]

I personally dislike save states and SRAM being saved along side the roms.

+1

There should a default folder to use out of the box, user-configurable to be any folder the user wants, with saves stored in sub-folders organised by system name to keep save files for the same game on different systems separate from each other so there is no filename conflict. You wouldn't want your save state for Dig Dug on the Gameboy overwritten when you played Dig Dug for the Atari 2600.

This makes them more portable, more shareable, easier to manage etc.

Folder for system should be optional. You can always add _nes, _c64, _snes, _pcx to filenames