I would prefer to keep some control over a) battle map; b) selecting battle based on size of teams; c) ranks of other players; and d) time remaining in a battle. It is difficult to meet a mission requirement of 1st place if you cannot enter a battle early. Without choice on the above matters, I do not like matchmaking system trial. Maybe allow choice of prior system for some servers, and provide matchmaking on maybe half of servers? Thx.