Buying a force or relax for one joint eg right knee Marine...left knee aqua? Making this could allow further customization and if for example you don't have enough money for a neptune force you could just buy a few neptune joints because they would obviously be cheaper then a full force/relax.. (This wouldn't replace full force's and relax's) so it would be a helpful feature for bigginers to atleaset have half there body gaia or marine..