What about a Hombrew application that downloads cia files one at a time from a directory on your computer via wifi, so that you can play without the need of an EmuNAND? In other words, you would just be virtually swapping out game cards. Like, it'd be so cool if you could mount/unmount the games from your sd card via wifi.
Also, since its on Homebrew, all the system would have to do is load up the game, just like an EmuNAND would, without the threat of bricking. (I think)
I know its far fetched but I'm just curious.