IMO a very good idea but it would give the more skilled poker players even more advantage over the
average player.
Possibly, but from I've noticed most 'average' (or inexperienced) players can be classified as 'tight passive', meaning they rarely bluff and only call with good hand. Those players are likely to fold before the flop (especially when someone raises). 'Unfold' could give them a second chance, when shitty hand turns out to be not-so-shitty.
So this could work both ways. Better skilled players will still have advantage and will profit more in the long run, but the less-skilled could have potentially more winning chances in the short run.