Not every problem. You still cant directly save to the mSD card, and they've had to revert back to using FRAM and needing to reboot the device to dump the save. And this is clearly a inconvenience they would like to overcome, as proven by the fact that they use to have FRAM back in the EZ Flash IV, but then tried to move away from it when they made the first Omega. With LEDs, you can lower the likelihood of accidental corruption, and having a button can give you the option of having both methods of saving.
Of course I'm not saying that a entire new version of the device should be created for this sole reason. But if another device was already being made (like a "lite" version for the NDS lite), then I dont see why this shouldnt be considered.