Champion Mastery Post-Rework

Hi, i'm one of the few people in the world that has Mastery Level 7 on Galio, and I couldn't be more excited for his rework. However I don't want to seem like a bandwagon when it comes out. I think that it would be cool if Riot could add a special Mastery Emote for the people that got Mastery 5-6-7 pre rework.

                  Sort of like when the harrowing skins came out in 2014(15?) and Riot gave the special icon for people who had the skin when it came out originally.  Or alternatively you could add a second chance to get Mastery 7 post rework, NOT reset the champion mastery on that champ, but signify that this person had Mastery 5-6-7 before he was reworked. 

                  Anyway I would love some feedback from the community/Riot on this, maybe this is just some crazy pipedream but I thought it was a pretty good idea. Thanks.