Have you considered how many frequencies would be required - one for each tug? Then there is licensing of the tugs and tug operators... and all... and all. Is it truly worth it?
As we work at a smaller airport and are 1 of 2 handling agents and the only 1 operating TBL vehicles, we only have 5 Pushback Tractors and therefore only 5 frequencies (licenses).
The Airport Authority have already requested all our operators (35) to be licensed for Ground/Air communications asap for towing operations so this is an expense we already face.