I agree.
I am not fully concerned by the fact that two functions (PTO and rear implements) are not used.
They might be there just for the show. Just to present real two functions of the real tractors, which, if I am not wrong, has PTO for powering, for example special tool (sprinkler, seed thrower or for trimming the grass), and those lifting rear implements are used to lift and carry those tools behind the tractor.
I agree that in this set they are useless, but still present.