Meh, pre-render backgrounds are immortal, and it's not like some 3D stuff on DS looked that much better.
I used to think that 2D stuff also aged ridiculously better than 3D stuff. Because it wasn't even until recently that I did jumped from the most demanding emulation I did as Nintendo 64 emulation to emulating PlayStation, PlayStation 2, Gamecube and Wii games. It was was me... building my first gaming PC in years for Final Fantasy XIV. Also, to play the rare more demanding doujinshi game better.
And I must say, that while 16-bit games with filters look great. Really, really great. With 32-bit and above games the 2D textures are the ones that aged the worst and are the hardest to look good. Perhaps it is that the emulation has focused on making 3D texture look good, though.
I really like the way 3D textures upscale on PlayStation, PlayStation 2, and ect. games. It reminds me of the same way that ultra filters like hqx4 bring out the best in SNES games and 2D textures. They look really charming and smooth. Low polygons with nice sampling and other filters can look really nice, especially if they're going for a "cartoony" look. With 3D anime games, those low polygons on max settings look surprisingly similar to state of the art cell shaded games.
While on the other hand, in 32-bit games, 2D textures scale up the worst and by far look the most pixelated. Of course, it could be the fact that meshing filtering both 2D and 3D textures in the same game has a long way to go and there hasn't been enough to work on upscaling the 2D textures in modern console emulators. But whatever it is, it shows. And even with the max filters applied to 2D textures in games like Final Fantasy VII, they still look pixelated and are a stark contrast from the 3D stuff. And in Final Fantasy VII there's a lot of garbage 2D textures when you apply filters, for some reason. Though that's probably an emulation problem. They don't even have hqx4 on emulators like ePSXe or the pcsx project for that matter.
Still, I maintain that 3D textures really do age just as well as 2D ones.
Also, I know a lot of people don't share my tastes at all. Some people hate 2D textures. Some people maintain that 2D textures are always much better. Many people hate filters on anything, especially classic games. Some people are fans of scanlines and bilinear filtering even though I hate them. I happen to have an aesthetic sense for liking smoothness and so I like filters. Some people also cannot stand aspect ratio stretching at all and anyone who does it. Whereas that doesn't really bother me so much other than having a big, smooth, clean looking image.