We probably should have a pinned "Mission Statement" in here, I'll leave that to Christian.
Further, there has to be some commonality in what is being designed for.
Some random thoughts:
"Modern" work should be a snapshot as at January 2008.
"Retro" would be what you make, of course.
For FS9, I'd say work should be compatible with Christian's mesh and topo, no question in my mind about this.
If someone doesn't have these products, Christian will make a special deal for you! I think everyone here would have this though.
I think all Robin's payware projects, and 2008 freeware photoreal, fit this bill.
So the "optimum" scenery will sit on 20m mesh, topo, and/or latest available photoreal.
Something which adds hugely to airport scenery is local texturing of aprons/runways etc.
This heads into payware territory, but if it can be implemented through this group, would be fantastic.
For FSX, what?
Stock install with SP2?
Lastly, where is all the stuff kept?
I assume NZFF can look after it, and Trolly might be able to help here, to create a logical folder structure, to allow for updates, patches, and growth paths.