Minecraft on the 3DS would have been genius...5 or so years ago. But then you'd only have the o3DS back then. Maybe it would have been successful back when the N3DS first launched. Otherwise, this release just seems...awkward. Too late into the 3DS lifecycle, with too clunky a version to bother with.
to be honest, since Mojang promised bringing multiplayer to 3DS, and since the "limitations" of this version are only mechanical (nothing to do with the hardware's incapibilities, just missing code or some shit), I can see them eventually updating it to be fully up-to-date and maintaining it.