Gareth Lewis :
It ruins the incentive to build your team and apply strategies to be the best you can be.
MB just means you can buy wins which is rapidly putting me off investing time and real money in this game.
It is possible to develop strategies and develop teams to play those strategies that limits the effectiveness of MB. Very satisfying to do so, as you see people wasting huge amounts of cash, whereas you get to spend your cash on upgrading facilities - currently 3 out of 3 in my league, through to the 3rd final in a row in the tournament, and won 5 away Guild Challenge games as well as my allocated home game all without bonus. I still think MB stinks, but you can beat it by building your team and applying strategies.