-PocketSNES has no scaling (don't say use snes9x4d, sound is terrible on some games; or else THAT needs to get fixed.
-Picodrive scaling only works in some games, but even when it works it's only horizontal (ref. Shining Force II, Gemfire for examples of non-working)
-gpSP only has zero scaling or fullscreen that stretches the aspect ratio
Some other things like key mapping being in every emulator would be nice as well, but it's currently not that annoying. Is there anyone that feels like working on this, or am I the only person it annoys?