Enchantment for faster sneaking speed(for getting around the warden faster)

I wrote this because of Kingbdoz's tweet about the warden and the deep dark biome. Among the many discussions that have been talked about, there was one in particular that had pulled in lots of attention which showed how there might be the boring and mandatory the stealth sessions for the warden. 

I think that instead of giving players a super op item to kill the warden with, or make it super easy to avoid, I think they should just make it faster to avoid. By having this enchantment on, you can sneak at walking speed. It being walking speed wouldn't make it too op, and would be a useful enchantment outside of just avoiding the warden, as it would also be useful for pvp scenarios ( because sneaking at walking speed would still make your nametag disappear ) and minigames. It would fit the devs vision because the warden still wouldn't be easily killable, it would just be faster to avoid. You would still have to sneak, just you would move faster while doing it.