Chaos and Random together serve as nothing more than to stall you and waste time farming MGP and cards, making playing the game overall less fun when you're dealt a lousy deck while knowing your opponent's deck will greatly outclass yours. A mixture of cards of various strengths make an interesting game, but being given weak cards for your hand time and time again is like a LV5 adventurer trying to fight a LV30 Bomb. Foregone conclusions are not fun to endure.