Might look better and less noisy if you omit the sharp/flat stickers. I can see this as being a useful learning tool, though not for everyone...like training wheels.
If you can't play without looking, then you can't play.
Fret markers aren't for the instrument you are playing, they are for others in the band to see where you are in jams like Pragestock or Barnstorm where you sometimes can't hear the other instruments very well. That's the only time I use them
Flamencology beating you with a meter stick not good enough?If someone just can't visualize the fretboard, I imagine this would help.