Something I would like to see incorporated into mythic plus in the future.

I’ll keep this kind of short and to the point. I am a big fan of challenge modes. I loved the cosmetic rewards that you received for getting gold on them all. I think that mythic plus in some capacity should have a reward scheme in a similar fashion. Perhaps maybe creating class sets around the theme of whatever the seasonal affix is, and unlocking them through timing every key on 15 for the season? maybe add a seasonal affix related mount for doing the same but for 10s? I think adding some form of reward aside from IO score (and gear obviously) would maybe incentivize people to try and run more keys? Tell me your thoughts on something like this.