It isn't a substitute for a fully hand modelled airport done using Ac3D etc but it's turned out to be quite effective. Rapport came from rapid Airport creator. Taxiways are not yet modelled however I hope they can be in a v1.1. There are some technical challenges to achieving taxiways with the method used and I had to draw the line at a good first version for release.
Thanks for the explanation Phil... will be looking forward to this!