Matt , the photo real are options, all the files I have done bleed and blend so you get an exact replica of the town or city , just requires a little work doing the autogen , I had a look at the land class with orbx and it is nothing to the area known least here in New Zealand , You simply cant pus a button and it changes , it really requires a lot off work .... and when you look at it when you are ship out with RAN and nothing to do .. that is were you can really hook into such project .
Land Class will only follow pretty much what is there , also will affect other areas in the region . A good example of using photo and AGN with ORBX seasons would the Whanganui scenery completed ... you can use it as a road map also to learn the city.
Other biggest thing ORBX don't even like us people who do the hard yards (time involved) doing Autogen are not to use ORBX AGN's .. how do you think they are going to react changing the land class , other winning thing with all the above ..... Everyone with default FSX has the opportunity to choose and use the scenery, great thing here we doing as freeware and as accurate as possible .