Hi ATC Watcher.
Yeah, but really is a hugely complex electronic system really needed?
I visited the old control tower at (London) Heathrow, where the taxiway lights were controlled by the controllers via a big board with the airport runways and taxiways drawn out and manual switches - "follow the greens" - which worked really well.
And as a pilot, the old block number system at LHR - " follow the greens and hold at block 202" - worked very well, but was outlawed by ?Europe.
There are probably many more short interconnecting taxiways at JFK, which complicate the issue, but surely a general traffic flow pattern could be devised that would reduce the amount of instructions required ?