If they do like they did in PNW then they will have basic ORBX library buildings, nothing spectacular but much better than just the default FSX runway rectangle.
Kinda my thoughts as well. I found that my MAIW scenery and Jim Dhaenens scenery played nicely, for the most part. Still trying to find a good combination that I can live with for McChord AFB. As for England & UK I have been installing some of the UK Military AFCADs (available
here) and trying those out, particularly in places where the MAIW FS9 scenery just doesn't quite fit right in FSX.
If I go with this ORBX FTX England (mostly likely I will) then I will probably just remove the whole batch of them, and start over again going thru airbase by airbase to see which work better for me.