Riot PLEASE can we reset masteries?

I feel DISGUSTED by my account not because I hate Soraka or Janna but because Sona is displayed in my top 3. I know I'm asking for you to work on something that might look frivolous to you but this is important. Very important. I care a lot about the aesthetics of my account and the thought that someone might see Sona really bugs me. I don't want people to see Sona on my top 3 most played champions. Can't I reset it? Or hide it until I reach 120000+ points with another champion? Or degrade my mastery 7 to 6? My account is like a wine-stained dress and this stain prevents you from wearing it. I struggle to access on this account and whenever I see that champion on my top 3 I just want to log out. I don't want to be identified with Sona.

This could also help that guy (and many other people tbh) who had 1 million mastery point on old Galio and stopped playing Galio after his rework.