KJReed wrote:
My problem is not so much that it drops from a lvl9, (believe me they do get locked and killed) but the fact that you would be adding an unlimited arti that upgrades a limited one.
Good point there, as I hadn't thought of that.
Also, killing a level 9 base doesn't happen often. It would take a long time to get 15 adaptive spire upgrades. So perhaps for the reason of keeping the crystal percentage at current, and making it somewhat easier to obtain, make it available from a new Biweekly mission instead.
And another mission in this new bi-weekly mission chain could upgrade adumbrate stations. Able to do it an unlimited amount of times, as this particular upgrade would be for an unlimited arti. ( This could be changed to obtain it from a level 9 base instead.)