People chastise me for it and others who do it, but I play for score in the MA to keep interest. It makes every sortie important and forces you to play the entire game (except ship/field gunning). This way, I am inclined to furball, help take bases, destroy towns with bombers/jabos, fight in tanks, and capture bases with goons/GV's.
If you take next month and make your goal to be in the top 50 overall, you will see that you must play every facet of the game and do things you wouldn't normally do (such as not resupplying a field with an M3 because it kills your K/S, K/T, D/S, D/T).