So we’re hitting the point of the expansion where dedicated professionals are beginning to max out their knowledge trees. TWW had the issue where after reaching this cap, and historically with no additional knowledge nodes added after release, excess KP was useless.
This expansion has a relatively easy fix for this same scenario. Once you’ve capped a profession, KP should be allowed to be exchanged or transmuted into additional moxie, which can then be used to buy the reagant bags. Even if its a low conversion (say, 5 moxie per KP), it would still make acquiring additional knowledge have some use.