I personally, am happy with the current state of cav. Would I like to see a buff to lances? Sure. Is it necessary? No, but I would argue justified. If you give spears the 360 then you make all other melee cav weapons obsolete (besides those couching lances), and your gonna piss off the 50% of foot troops who can't manage cav as it is even more. What I would like to see and is a higher reduction in glancing. Beyond that, however I would say that melee cav right now is pretty balanced. In terms of cost per kill I feel that light cav is a little under powered while heavy might be a little over powered, but again only slightly.