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I'm already starting to get confused about what we're discussing here. Whether it's about calculating player ratings or awarding Grail points. These two issues should have been separated into two different topics.
To be honest, I don't see any drawbacks in IronAxe's player rating system, if we remove the aging mechanic.
As for awarding Grail points, the optimal option, in my opinion, is VDV_forever's proposal.
P.S. 284 views and 16 votes. The voter turnout is slightly more than 5% - so the election would be deemed invalid :D. Is it really that hard for them to vote?