I noticed you guys were talking at one point about adding FFIII to the FFI & II Rom. Having all three games in one.
I have been testing around with Rom expansion recently and was wondering, If I were able to expand the Rom big enough, Would that help you at all with the project you had mentioned of combining them together? I'm not 100% sure if the Emulators will be able to run the larger Rom but from a test I did on a game a year ago, The results were pretty good.
If your serious about trying to combine all three games, I could run some tests and see if I can get the Rom big enough to squeeze them all in.