Counts as a 10 metre fall per degree of failure? That's 1d10+10 damage minimum on a base fail!
Given that a stock drop-troop soldier probably has an Agi of about 34, and +20 from the chute, that will mean that on a drop, about 54% of the regiment is fine, 10% are critiically injured, and 36% are nothing more than bloody smears on the planets surface. Even with the catfall talent (not that drop-troops start with acrobatics anyhow) that is still a huge amount of cassualties.
The fall damage of a failed grav chute roll needs to be reduced significantly. 3m per degree of failure should be about right. Still very dangerous on a mega-fail, but not outright lethal with a minor fail.