Can we Disenchante Mastery Tokens for Blue Essence Please?

I have mastery tokens on soo many champs that I rarely play and would like to be able to disenchant them to upgrade the mastery of ones that I do play. It's not like it's going to hide your mastery since you can choose to not upgrade past lvl 5, so any argument that it would make it unfair to the enemy by not showing your mastery is invalid.