If PoB could do it for you in a way similar to /trade where you can search for your 6 current notables inside your timeless jewel area and specify you "count" 6 double damage 2 double damage, life, intimidate and spit out a list of seed numbers that would give you that, I guess that would fix most of the inconvenience.
I don't want to bring harvest up because it's such a touchy subject but...
Just like harvest, this would play out the same way. The jewels would get nerfed into blandness or made much rarer somehow because they balance power with rarity/accessability.
Would that be good? I have doubts