Putting a carrot in front of players to futilely chase usually doesn't work out. You can go check the BDO forums & Reddit if you'd like to see how happy players are when you actually need the highest enhance in the game to be at the top and players fail at doing so. Their rates are booty also, but at least they have failstacks to increase the chance. Still, once they fail people realize all that grinding was for nothing. A 1% chance at +20 is utterly ridiculous, and because of how probabilities work, that means that far fewer thank 1% of players will ever even see it.