I'm hoping that SA-1 is supported on the SD2SNES too, I just got one as well and am really impressed with all the titles that are supported compared to when I had a Super EverDrive, which I had for 5 years. My purchase of the SD2SNES was pretty good timing, as Super FX support came out right before I bought it (and I didn't know until after I bought it). This made my purchase all the much more worthwhile for me.
Anyways, I can patiently wait for SA-1 support tbh, because there's only 3 games that I'd like to play if it is supported some day; Kirby's Dreamland 3, Kirby Super Star, and Super Mario RPG. I can always just purchase those games if I want to play them badly enough, but believe it or not I'm actually really not much of a fan of any of those 3 games. Also, I'm not much of a fan of Dragon Ball Z Hyper Dimension either. So yeah, I can most certainly wait patiently, but I'm also hoping that it's not impossible.
Ok I rambled enough.