Is only using homebrew/cfw stuff on perma-offline emunand functionally identical to the dump nand -> cfw -> restore clean nand method mentioned in the OP?
Yeah it works great but it's the obvious Ds factor you loose from it it's not like playing atari games on atari because Nintendo actually use to give a reason to buy their hardware
I just like game consoles how they were intended to play if they have a unique enough reason to buy them anything else yeah just download emulation for it