Was DS ever officially defined in the first place?
I know we assumed Dual Screen, but wasn't it also internally referred to as Developer System or something like that?
I can't prove it, but I'm pretty sure it does mean "Dual Screen".
I really love Nintendo and all, but let's face it... they suck terribly when it comes to naming their systems. GBA, N64, DS, Wii, etc. are all examples of systems which were cool and very popular, but their names were unimaginative or just kinda bland. MS and Sony aren't really any better, though, because they just name their next system after the old one and put a number on it (PS1, PS2, PS3... ETC. Don't be surprised if there's a PS4).
SEGA and Atari might have made flop-worthy systems, but we have to give them credit because they REALLY knew how to give them cool names. Dreamcast was a cool name, as was the Atari Jaguar and Lynx. Even if you didn't know anything about those systems, you'd still be intrigued just because of the awesome names.
Nintendo is like those movie studios that make kickass movies with explosions and cool action, but then FUBAR the name with something bland and uninteresting that doesn't really grab your attention or excite your imagination. Why can't we have a Nintendo "Excalibur" system? or a Nintendo "Raptor". These are the sorts of names I'd rather see the DS2 have than, well... "DS2".