Sorry, I was trying to be sarcastic with that last part... kinda hard to do that over the internet... my bad. And your right, people have been saying used games are on the way out for years, but the PS4 and xbox 720 are right around the corner, most likely launching this year. Whether or not they allow used games will have a large impact on the gaming world most likely.
I heard that the PS4 was doing away with used games in a video by woody's gamertag in which he talked about rumors, and thats all we have to go on right now. Sony has a reveal scheduled for Feb 20th, so we will (probably) know then.
How this relates to fire emblem is as follows: Since it is unlikely Nintendo will launch a new system, handheld or otherwise, if they want to get rid of used games they would have to stop printing them. Meaning eshop only games. Is it possible then that Nintendo won't print anymore FE13 games? I highly doubt it, but the fact remains that we will likely see a change in the way we buy 3ds games this year. It has an very slight chance of affecting awakening, but it will affect the next fire emblem game ((and all ds games for that matter (and all games in general for that matter)).