Mastery Levels

I was wondering if anyone had heard anything about possible higher levels of mastery 8, 9 and 10

Also I have some suggestions, I have seen some good suggestions already but here are mine in a nutshell.

Mastery level 8 - Requires previous mastery goals but an added 100k, 200k points in total on that champion. The badge could look however it wanted, maybe even black.

Mastery Level 9 - Would be similar to level 8 in the case you'd need mastery points and maybe some more s+ games added in there and the mastery Icon could be white, leave this up to the dev's.

Mastery Level 10 - This would need let's say 500k mastery points and also 300 wins on that champion alone? Also a cool little reward for earning this would be let's say you get a one time Mastery emote where you could choose between joke, taunt or laugh and it would be heard by all of the players. (emphasis on one time, per game)

I have seen posts suggesting that maybe you should receive champion specific chroma's etc but I think this is the more minimal amount of effort riot could achieve than an exclusive skin for all champs.

Either way if you have any knowledge of what riot are doing next can you comment and let me know, thanks!