Why shouldn't there be certain crafts from human bones?
As for the 5k Authority, how about it starts at like 100, and scales on the normal quality scale, but as a total of all the LP they've earned, or all the stats accumulated.
That is at q10 it'd be 100 Auth, so let's say the person has 100 in all stats, you'd gain 894 Auth.
Let's say the person has 1,000 in all stats, 28,200 Authority gained.
Obviously the numbers can be skewed a bit, maybe a base of 500... that'd be 14k auth, not bad.
However it should take something away from the other person...