...wish they'd let us make accounts without a Wii U. :( Hopefully that functionality shows up by the time it hits 3DS but I doubt I'd get my username by then anyway. Sigh.
I'd use a friend's system to make a NNID, but since accounts are tied to the system (Because this is modern-but-still-stuck-in-the-early-2000s-mindset Nintendo), that'd be a waste.
Yeah, if they weren't tied to systems, I'd have asked a friend who has a Wii U to make me an account to secure my username ages ago. D: