Hoo boy. Nothing will necessarily beat the look and feel of good old-fashioned SNES sprites and all that, but the 3D still looks surprisingly nice, and based on screenshots it seems like it'll basically retain the exact same gameplay as the original.
Even the little bit of voice acting in the trailer sounds impressively bearable, though I do still hope there'll be an option for Japanese voices too; they included it in the FFXII remaster, so there's hope here.
Honestly, nothing I can complain about so far (though of course other fans are already bitching about how the 3D "ruins the charm of the original" or whatever; good old whiney, entitled videogame fans).
And this is following up on the like-minded 3D remake of the original Seiken Densetsu/Final Fantasy Adventure, which was pretty cool; with any luck maybe they'll eventually give us a 3D version of Seiken Densetsu 3. Would be a good deal more work than this one, but it'd be cool to see all the same.