luckily, i own uniracers, super metroid, chrono trigger, and FF3(6) for SNES....
the problem with uniracers and super metroid are the lack of buttons on the SP, you need to use every button in those games, and i don't believe porting them would work out to well.
I never played secret of mana, and i hope they do port that, maybe as a sequal to "Sword of Mana" which they have already announced.
I would love for starfox to be ported, but i know that can't happen because of the button issue, (at least i still own it for SNES!)
now that i think about it, outside of RPG's, there are barely any games i would like to see on GBA that i don't already own on SNES.. go SNES go!