The reason people use match bonus in the G v G is because lower guilds are matched against the top guilds so to have a chance at earning some recruiter points the lower guild use match bonus.
Hawkes Bay Magpies talks of fairness so why not match the G v G challenges better so the guilds lower down the rankings don't have to face guilds in the top 10. If match bonus was removed then the Top 10 guilds would reap the rewards of more recruiter points leaving the lower order guilds with nothing.
I would like to see MB removed from league games as for me this is far more important. Sure the point of the game is to improve your squad and do well your league. As a 70*+ team in the top level of the league, currently 13, I have been on the end of thrashing this season due to match bonuses by teams either 10* better or worse than my team. When I play the same teams in friendlies, i.e.without MB, my team is competitive. I don't mind losing to the likes of rosco, cayden, dropkicks etc as their teams are significantly better than mine but when I have home advantage and get thrashed by 45/50* team without scoring a point then something is wrong with the game!
Summary - better matching of G v G would negate the need for match bonuses and make the challenges more competitive. Remove MB from league games so that your team rating and strategy is where it matters not how much money you have.