Hello
Sathkur is already having karma system giving guaranteed rewards at thresholds (not included chances to receive them through actual drop rates).
750 coins > Dust of the Petrified
1000 coins > Splinter of Form
2000 coins > Sun Essence.
We also reduced these requirements to create such items before from 30>20, as well as adding ability to use prestige benefit for crafting to reduce it even further, there is no plans to reduce it even more, as it's endgame progression that is already drastically faster to complete now than on original release, as well as having a second option to obtain them.
These runes aren't blocking character progress, as it's not required to continue the questline, and you may progress with it as quickly or slowly as you like.
Greetings