Well Jabo, I've thought of something that might be interesting.
There's a standardized savestate format at http://snss.baisoku.org/ that is designed to be used by several NES emulators. Unfortunately, it seems that it has been neglected lately, although the new NES emulator "80five" supports it (nester supports it as well). I thought it might be interesting if Jnes supported it too. IMO, NES emulators "need" a standardized savestate format, and maybe if it was implemented into Jnes, other NES emulator authors would implement it, too (since Jnes is a popular emulator).
I don't know if this would be a hassle to implement, or if you would like to do it, but it's an interesting feature to think about.
I don't know if this would be a hassle to implement, or if you would like to do it, but it's an interesting feature to think about.