Yes,some function require to unlock some specific node in the Research and Development tree or at building upgrade. If you what to have all functions at start of the career,you can use this MM patch: @PART[*]:HAS[@MODULE[ModuleCommand],!MODULE[MechJebCore]]:Final { MODULE { name = MechJebCore } } This will automatically add MJ to all pods and probes(no need for AR202).But there are still couple functions that are hardcodet and get unlocked by building upgrade.One of them being maneuver