I have been using the GBA on my SupercardDSTwo on my N3DS. But that's mostly because I'm a nostaglia wh***. It runs what I want well enough, and the only real downside is you can't activate cheats or at least I can't.
btw i feel this a good time to remind you guys that sea of thieves was made by rare, who also made DKC1-3 and DK64, alongside banjo kazooie and conker's bad fur day