I've thought about adding part of the Warchest system into HQ but it would take a lot of work and have had other projects I have wanted to see in HQ and MM which have a higher priority.
I think someone else had brought it up but like everything else with MM and friends it depends on who is working on it, how much of a priority it is, and how much time they have. All of us (devs and contributors) have a limited amount of time and have our own priorities.