Hello Florian,
As always its a matter of resources and priorities. We know the many benefits such a tool could bring however right now our focus is on getting the Sharklets ready and out to our customers.
I am just using the ORBX building and tree textures, ORBX GLobal and openLC, and some ORBX airports.
What you see on my screenshot is my "Germany Photoreal" project:
http://www.fsxforum.de/viewtopic.php?f=51&t=19491