I'm thinking about it. I'm definitely picking up a game on my way home from work tonight - I'm deciding between this, Children of Mana, FF3 (very much not convinced I'll enjoy a hard-core old-school RPG), Mario Hoops, and, of all things, Tony Hawk Downhill Jam.
It's nice to have quality options on the system again. Good games have been coming out at a ferocious pace in the last 2 months.
The only thing holding me back from getting it is my disappointment in the New Super Mario Bros. It's soured me a little on 2d platformers. This could either reawaken my love for them or do nothing for me. I'm not sure yet.
I've never played the original so I'm not to worried about the derivativeness.