An ideal nerf in my eyes would be nerfing the hell out of shield skill when on horseback. What these heavy cav players do is get themselves into one terrible situation after another that should lead to their death, but if they hold right click down and waggle their character around them AND their horse become impervious to melee attacks, except maybe the horse's head at a perfect angle. Above, below, and wrapped around the sides of the shield, is a gigantic and often perplexing forcefield that absolutely has to go.
If the shield only blocked directly in front of the rider, I guarantee heavy cav users will find themselves taking way more damage each round, leading to earlier dismounts, and less of the HOLY SHIT HORDE OF CAV factor that ruins the servers, all round every round.
This would have the nice benefit of further empowering melee classes to pick up the slack that ranged leaves, making everyone (except ranged) happier, which is how it should be.