No matter what you think of maps other than SR, there's no reason why all matchmade games shouldn't count towards champion mastery. I would understand if Riot wanted to restrict it to ranked games, but it works on normal SR, so there's no reason it shouldn't work on normal TT etc.
Kholdstare131 votesYes, it should, but you realize how shit Riot is at measuring personal contribution, right? I'm all for giving out fixed values on win/loss scaled for time on all maps, but anything even close to Dominion's score system on grading just makes the grades worthless, and likely promotes toxic noobish gameplay for the sake of farming points.
Risotadazo1 votesThat's a fair point (I'm not even entirely sure I understand how scores work on Dominion), but champion mastery wouldn't have to be linked directly to your score, would it? And TT doesn't have that problem.
If Riot can't figure out how to measure personal contribution they really shouldn't have implemented the mastery system in the first place, especially since your mastery is public information and you can't opt out.