Please change droprates for traitstones

Would it be possible to change the drop chance to allow for more targeted farming ?

For example take the minor stones out for explore 10 and 11 and have explore 12 only drop runic and arcanes.

Or at the very least increase the drop chance for the higher stones on 10,11,12

Am so tired of spamming explore 1 untill my eyes bleed for a few runics.

Hope you will consider this.