Leshma, I question your "low risk" labeling of cavalry, because all I do is play cavalry, and drink (of course). The "average" cavalry player--the one riding a horse of mere flesh, rather than an unaffordable iron skinned behemoth--faces many many risks when playing. Archers drop your horse in three or four hits (unless you're riding a champion something, in which case its five hits). Any competent polearm user can magically bring you to a dead stop, often literally, by waggling his or her weapon in the general vicinity of your horse's face. Competent 2h users can avoid your lance thrusts without too much difficulty, and then, jumping to Mario-esque highs, stab you in the face. Throwers rape your horse without trying. Horse archers and Horse xbowmen troll your horse to death.
I see where your label of "low-risk" comes from, though. What makes cavalry different than those mortals who walk on their feet is the cavalry player's control of when and where he or she will actually face those risks. Awareness on the virtual battlefield allows a cavalry player to easily avoid most of the above risky things--just ride away from them. But if a cavalry player wants to bridge the gap between "average" and "good", and actually contribute to his or her team, he or she will have to put him or her self in risky situations. He or she will have to ride into range of archers, throwers, and xbowmen; will have to risk getting the attention of an HA or HXbow; will have to get within arms reach of polearms and 2handers alike. Yes, cavalry players can and frequently do spend the entire match riding in circles far away from the actual fight, killing enemy afk's and stragglers and playing the "low-risk" role.
Fuck those guys. Cool cavs laugh in the face of pretend-death, lancing enemy V.I.P's from right under their team's nose.
tl;dr: I'm so fucking bored, and such a procrastinator, that instead of doing something productive this morning I sat here and sipped coffee while responding to Leshma's post, the point of which really was not cavalry at all.