There is no way a monocable gondola system is going to be suitable for the numbers of passengers that will be rocking up at Parkway at peak times. They can only fit about half a dozen people with luggage, and if 50-70 pax turn up at the station on a single train, it's going to take a good ten minutes or more to get everyone through - assuming an optimistic frequency of 45-60 seconds per gondola (they will inevitably cheap out and won't have anything like the number of gondolas required for that). They're also relatively slow - nice if you're marketing a tourist attraction - a nuisance if you're desperate to catch a flight.
Worse, they have to close down with even the most moderate gust of wind (even ones that won't affect the aviation) so a fleet of replacement buses will needed on standby - more cost.
Realistically they're going to need a 2-cable or even 3-cable system, or even a full-blown aerial tram (which has its own engineering difficulties) - yet more cost that could prove prohibitive.
Probably the best place to terminate such a system would be the roof of the multi-storey car park. And how badly would it affect the control tower's view? Could always use the tower as a pylon!
