Portable Navaids/taxiways

Along with the SP2 attachtools for Runway_start, runway_end, etc, I would like to see attachtool functionality for navaids such as NDB, VOR, and ILS. This would allow a cruise ship, carrier, or other movable platform to be found by traditional methods.

Additionally, taxiway_start and taxiway_end attachtools would seem ideal for elevated bridges, platforms, etc. to be free of the flatten currently imposed when placing these objects. A parking spot attachtool would be welcomed as well.

Since the above items would be referenced to the model 0,0, instead of the airport reference point, they could be used to make true terrain following airports when used in conjunction with a varible height Airport_Backgrounds_Flatten.