To clarify:
With the latest hotfix to the Conquest Point cap, it is intended that the Conquest awarded by winning Arena matches and Random Battlegrounds will never go above your weekly Arena cap. The only way to gain that last bit of Conquest is to win Rated battlegrounds after you have reached the lower cap. (This is all assuming that your Arena point cap is lower than your Rated Battleground cap)
http://us.battle.net/wow/en/forum/topic/6864606629?page=7
So, I'm still trying to work out how precisely this works, but if there is a workaround, I am confident that Blizzard will bring it down fast. This means that we need RBG groups.
I have no delusions of grandeur about the one I'd like to make. This one would just be for points, and would meet on the weekends. Anyone interested?