B) Very slighty reduce the threshold for bumpstabs, and if possible completely stop or heavily reduce the moving people around aspect of cav. IMO Warband was broken when it came to bumpstabs but it did provide a balancing aspect to archers, so there should be a middleground.
I'd rather not see bumpstabs becoming the norm, like they were in Warband. It's a bit like how no one had fun when kicks were so easy a few patches ago, it won't be fun to die to bumpstabs all the time.
Archers are in a nice spot in the current live patch, and the changes in beta are supposed to exaggerate the difference between a longbow and a shortbow, which should in theory make it even better.