Im confused. Cant zipline be replicated by setting Cable Cam and enabling free look ?
zipline can only be partially replicated by mpcc. to create a line with mpcc you have to fly really, really far away and set point a and then fly really, really far away in the other direction and set point b. and mpcc has free look, not spot lock.
zipline will set those points in both directions to 'infinity' automatically by just entering the zipline and hit start. on top of that, it has spot lock which will automatically keep the camera focused on a subject as the solo moves up and down the line. instant pivot.