I think the point about grinding that I and Machiknight were trying to make in the other thread is that grinding for a single resource (i.e., Arcane Summer Traitstones) in a single location (Whitehelm) may require playing 1500 matches in Whitehelm alone, in order to win the requisite 12 Arcane traitstones needed to upgrade my Hero to Priest Class 2nd Trait. Crazy, huh?