Knights - BlueBloods :
Match Bonus' make Guild Challenges a joke.
At least in championship/tournament games the away team can pay a bonus too, but in GVG games the away team is always at the mercy of a bonused up challenger
So either allow both teams in GVG matches to pay bonuses or get rid of bonuses completely.
Given that the defensive team can in theory be challenged 50 times, MB would bankrupt a player in no time, so GvG defensive MB is a no no.