Mastery and Mastery Tokens

So I personally have a lot of mastery tokens that never plan to use or make into a mastery emote. I would love it for them to implement a system that allowed us to deconstruct these tokens for maybe a small amount of BE. And perhaps maybe if you had a mastery on a champion and wanted to get rid of it. Coming from someone who switched roles I no longer wish to claims of mastery on the champions from another role. May just be me but I wanted some thoughts on it