What modern day tractor lacks the ability to run the pto with the tractor being stationary? I’m guessing none.
If there was ever a 3 legged Deere the 3043D is it.
I admit, I have not been on a JD 3043D,, but,,
the concept of "transmission PTO" may be being misinterpreted,,
There are at least two types of transmission PTO's,,
the simple one like my JD 650 has,, the 650 has a single stage clutch.
With single stage, when the wheel drive stops, the PTO stops.
Then, there is the two stage clutch PTO.
The two stage PTO equipped tractor can be operated exactly like a hydraulic PTO.
The tractor PTO does not disengage until the clutch pedal is FULLY depressed.
Partially depress the clutch pedal, the transmission only disengages.
This is a very common clutch system.
I have driven two stage equipped tractors, but, to the best of my memory,
I never operated a PTO attachment with that type tractor.
Yes, my JD 4105 has the best type PTO,, pull a button on the dash, the PTO softly engages.
Push in that switch, the PTO disengages.