I just want to point out that it's not a requirement that someone gets the short stick. In an ideal world, we'd have a trinity system where all 3 parts get a mid-length stick.
What we're stuck with now is tanks getting the long stick, DPS getting a mid-length stick, and both the tanks and the DPS are still trying to take more from the healers short stick. They do need to rebalance the sticks or the healer will be left with no stick at all.