forget's post is helpful but if you press the play button on all the recordings at once it achieves the desired effect - replication of RT patter, 'cabin secure', idents etc. that may ultimately confuse everyone. There is enough noise as it is, IMHO.
Also, as the transmitter is located AFTER the line, surely incursion has already occurred by this point ?
I think the best plan would be to extend the 'hefty fines for being early' to include 'hefty fines for not departing on time'. Particular waypoints could also be time-stamped with the provision of more en-route holding points (laybys) just in case the wind on the day was non-standard. This would allow more accurate arrivals and departures to the point that runway crossing would only be allowed 4 mins and 15 seconds before your departure slot and this time would be coordinated such that no aircraft would be on the runway to be crossed between 4 minutes and 4 minutes 30 seconds of that time. We could probably do away with RT altogether.
Alternatively, airlines could choose other airports where this financial inducement and technology was not available.