Mastery

It would be nice if an 8th mastery was implemented, something really hard to achieve, even for one-tricks. Right now you can get mastery 7 with 40k mastery point if you're lucky, but there should be something to differentiate the 40k mastery 7 and the 200k or 1000k mastery 7 player. Maybe a long set of champion-specific quests or something simpler but still quite hard to achieve.