It would be good if there was an option for the right analogue stick to mimic the D-Pad as it currently does nothing on Old 3DS. That would be good for games with configurable controls. Also I think there should be an option to set an image as the background of the touchscreen window on PC. This would help for games with a static bottom screen so you could have a rough idea of what you're tapping. Also an option for the trigger buttons to mimic the bumpers so that it's easier to hold on Old 3DS. I haven't used this with a New 3DS so I don't know if the buttons I mentioned do anything there. Finally, I think it would be useful if the window with the touchscreen thing was resizeable.
It would be good if there was an option for the right analogue stick to mimic the D-Pad as it currently does nothing on Old 3DS. That would be good for games with configurable controls. Also I think there should be an option to set an image as the background of the touchscreen window on PC. This would help for games with a static bottom screen so you could have a rough idea of what you're tapping. Also an option for the trigger buttons to mimic the bumpers so that it's easier to hold on Old 3DS. I haven't used this with a New 3DS so I don't know if the buttons I mentioned do anything there. Finally, I think it would be useful if the window with the touchscreen thing was resizeable.