Originally Posted by
stormgust
For which k do you choose X+k*Y <= 1 and for which k, X+k*Y>=1 (normed to performance of other stats)? It's really not any easier to tune, and the only balanced outcome is Y=0 and X~= 1. For X<<1 you either end up with excessive scaling if you choose Y large, or for small Y you end up with a disproportional gain for the work involved (i.e. X+k*Y is only slightly above one), so it isn't worth the average "loss" you're going to face over other stats. Using Y somewhere in the middle just means gear progression will have you at either case somewhere during the course of the expansion.
If you choose X>1, you'd pick mastery over other stats anyway, and Y>0 would then merely would yield other stats being tuned back down (possible to "negligible" performance) to keep overall scaling in check (and again, how do you choose k when balancing this?)