I recently bought enchantrashing and I can say its not worth it to play with unless you use it on something you would destroy anyway. Playing with resins is not fair as well as their value doesn't doubles.
Back to idea:
Improved. Enchantrashing :
This skill reduces quantity destroyed during failed attempt by 0.5% makes it destroying only half stack at max level.
Still even maxed with 50% chance you even - as you would just uptiered it
If it's too op make skill epic or lvl 80 adventuring skill.