Tanki, many many players are upset and i hope you see why. I am active in education, in "Ludodidactiek". Games are used in education. A very important factor is the influence a player has on the game. Many upgrades are given players moren opportunities to choose. Tanki does the opposit. If pleasure of playing isn't the key factor but money is, then still its not a good idea. Don't be surprised if many payers leave and therefore your income will decrease. I will bet you a big wine bottle that matchmaking kills pleasure and the money!