My idea is for support for a DIY adapter to run games directly off cartridges. It could be something as complex as a USB device... Or a parallel printer port (not that many computers have them these days) theoretically is should be possible... Although how much demand for it is the big question. Input?
I plan to add an option that specifies to only use the mouse for 'analog-input' type controllers (like paddles, real mouse, etc). And it would be the default. In all honesty, I don't know who uses the mouse for joystick input anyway; I may even remove the option completely. I personally never use it, and at times it screws me up as well (and I wrote the thing).
This may not happen, as Stella is GPL2, and creating a package containing a ROM may cause issues with the copyright on the RO