I had a concern regarding the new achievement system.

Currently History has been acting as a form of an achievement system, and that's all well and good, however it has a problematic flaw. That would be that some accomplishments become permanently unattainable. The reason this is an issue is because it inhibits the enjoyment of rivalry between players. Personally I've been thinking of it in terms of whoever has more is winning, but frankly, the unfairness is discouraging, and even if ahead it doesn't merit much.

I suggest that the new achievement system instead be formed to encourage rivalry between players, and not be made to have any become permanently unattainable. Seasonal things and such are fine, but to better promote rivalry not one should be made impossible to later acquire. As for History, I feel that should be left to continue as it has been, recording both lasting and ephemeral accomplishments.