The 2015 control system doesn't use the small wago connectors. They are replaced by
tool-less push-in connectors from Weidmuller. These are the same connectors used on the 2CAN. They require a little practice to get the wire stripped to the correct length, and the wire must fairly straight (too many insertions and removals may require starting over), but should remove the need for inexperienced people to use their forehead or chin.