Concept which could be grafted to a system of clan or “private” party between friends.
Create a Mass by being several player connected simultaneously on the same instance and being able to modify the MECH to several player
a player on the face, a player on one leg or more than one player on the backpack. it could be a way for groups of friends to create a mecha together, it could be a system compatible with different MASS skeletons (like the Arachne for example)
Also compatible for clan projects or just create a standardized unit for his group of friends in multi players will create together a Mecha and then get it back on their account to can be personalized one last time before going on a mission with machines seem to come out of the same assembly line.