Aren't more volatile valuations also better for the value seeking employees? Let's say in 1 year there's a 50% chance of the valuation going up 3x, and a 50% chance of it going down to 0.
You rest and vest if it goes up, or find another company if it fails. The ante would be 1 year's RSU and job searching for a payoff of 3 years worth of RSUs.