But, there's more. The EMS cart, just like most others, has 128 kB of RAM, while most games use only 32 kB. Nothing (except for laziness) would stop me from saving a game save as a file, much like a LSDj song. There would be some complications, like the need to patch game ROMs with a little piece of code, but in principle it's still possible.
But wait, there's even more! Order within ten minutes - I sad ten minutes...! Just kidding. But a well hidden secret (I suppose?) is that all EMS cartridges (both old blue and USB ones) have multi-ROM support. This is separate from the "two pages" thing. This means that you could basically fill up the whole ROM area (2*32M) with programs, provided that
1) There's a program to take care of the special bank switching needed.
2) RAM sharing is taken care of where applicable.
Point 1 is the big problem. There used to be a menu ROM for the old blue cartridges, which worked fine, except that it worked particularly badly with LSDj, which made it fall into obscurity. A main candidate feature for LittleFM, even if it will take some effort, is to implement multi-ROM support for EMS cartridges, that is compatible with LSDj. That way, LFM could offer something unique to EMS users. Additionally, I could very well add extra features, such as the ability to get back to a menu with a choice of games/programs by pressing sel+start+B+A, basically a soft reset feature.
Now, convince to actually sit down and do it. 