So..some impressions after having some time to play this with my wife last night:
Like the NES classic, the SNES classic body is super cute in how tiny it is. It hits all the nostalgia buttons with how the power button and the reset button feel just like the SNES. Still not a fan of how you have to pull that bracket out from the front to open the controller ports, but it shouldn't be a problem since I plan on being pretty ginger with this thing.
Thank god Nintendo had the sense to include the 2nd controller. It's not an exact replica of the original SNES controller (feels different on the body, and it's definitely more compact), but I had no problems playing with them. It feels like a close enough in proximity, and the buttons/dpad feel good.
Only grievance I have so far - there is something REALLY WRONG with the sound emulation for Super Mario World and Yoshi's Island. On the overworld music and certain level tracks, there is a 1/2 second hitch in the music, like it pauses for a split second, then picks back up where it left off before that hitch. My wife didn't notice it since she never played the originals, but for someone who played these games over and over, and have seen Nintendo emulate this on several of their Virtual Consoles, it's kind of pathetic they would let this happen.
I guess in all, that's a minor gripe. I'm pretty happy with it in spite of that, and glad they included a rewind feature, even though it's kind of silly how you have to access it.