Design spirits.
That was Ves' brilliant idea.
Well, to call it brilliant was a stretch, but he was quite confident he could make it work.
Master Vayro Goldstein certainly had his own opinions on this subject. He did not exactly radiate approval when he heard Ves' proposal.
Design spirits had always been difficult for other mech designers to accept. They were not pieces of reproducible technologies, but living entities that were unique and difficult to control.
The fact that most of them did not possess a tangible and physical presence in the material realm frustrated many people's attempts to get a grip on these spiritual entities! They could neither get a hold of design spirits or make their own. The only way to make use of their power was to negotiate with them, but how can that be done when they had already established an excellent mutually beneficial cooperation with Ves?