"You fear what you don't understand and eliminate what you fear... It's because of foolish people like you that there is conlict!"
- Aeolus from Megaman ZX Advent
Well, I fear you're gonna have to live with that since as of right now, soft reset indeed fails on nesDS... and I don't think there is any way around that...
Well, add Okamiden and hopefully Ni no Kuni to that list and I'd say that awesome system bringing us joy for the past 6 years is more like "going out with a bang"
Yes, indeed you can!
Just download this nifty little app called GBA Exploader from Filetrip and play your favourite GBAGames!
It should work on any flashcard and with different expansion devices, so have fun!