The game works fine, but doesn't save. I think this game uses a 32 MB save file for the mini-games like some flashcarts, but dunno if it could work for the emulator.
The game will come out in NA as WarioWare D.I.Y.
Do you know if this save type could be implemented in future?
Thanks a lot.
It seems like 0.9.3 will introduce some major changes to how DeSmuME saves, so you might want to wait until it's released.
To answer your exact question: yes, it could be implemented in the future.
Will it be? Probably.
When? Not 0.9.3