Mastery Level 6/7 Tokens ReWork

tl;DR: think Riot makes it WAY too difficult to reach level 6/7 mastery given how valuable BE is. System can be easily modified in my opinion and ought to be.

I have a pretty simple, straightforward idea about this. Right now, I think its absurd to be coughing up 3k BE for the right to flash mastery lvl 6/7. Especially when the average champion cost is right around there. Otherwise, you just have to bank on the very low chance of pulling one of your lvl 6/7 champs from a champion capsule or chest.

There should be NO blue essence cost for getting lvl 6/7, but rather, you should have to demonstrate MORE S-/S/S+ performances to get them.

For example, lvl 6 requires 3 S/S- performances, and level 7 requires 5 S/S+ performances. Right now, the threshold of only 2 S- performances for level 6 is weak. The other team could just be bad/trolling and you can easily get an S. Most importantly, it just sucks to have played a champ in 100+ games and have gotten at least 10 S games in that 100, and then to still be stuck at mastery level 5.

Thoughts??