[{quoted}](name=Akio of Lud,realm=NA,application-id=LFfTlAky,discussion-id=u5HHAaJX,comment-id=0007,timestamp=2015-06-18T13:38:41.919+0000)
Well there are two problems here for Dominion: the first being calculating points itself would be hard (read around forums recently and the current personal score system is considered broken by high MMR dominion players) and the second is cross map issues. If you had someone mastery 5 X champion and they only played Dominion/ARAM/Twisted Treeline and then went to Summoner's Rift their teammates would be misinformed on how skilled the player might be on SR. What Riot could do is if they find a way to properly calculate mastery points is have map specific masteries.
Recently? We've been saying it for 3 years straight.
And mastery already doesn't imply skill Even if you do play SR, you can play 200 games feeding as touchdown Rammus and reach rank 5, the same as a normal Rammus doing well over 50 games. All mastery rank shows is that you play a champ a lot. "Good" or not just comes down to how fast you can earn it.
The system would be fine just giving out points like IP, flat across the team for win/loss.