Michael,
I dont know if you have looked at my thread
http://www.fsdreamteam.com/forum/index.php?topic=3350.0 , but I am also experiencing some of the same issues as you are, like the artifacts(bleed thru) and shifting of small objects, as well as some seams in the ground texture, like in your 2nd picture titled "taxiway A".
It seems that from what Umberto has said in my post at least, is that simconnect can get flooded and that it can create the problems in the ground textures because they are controlled by the addon manager. My scenery works fine until I have UT2 enabled and EZDok enabled, then addon manager and simconnect seem to get to much info to process and I start getting things like you are seeing. I am still testing on my end by enabling one module at a time to see which one causes the worst interaction.
I have also noticed that I get a lot of problems with this scenery when flying the LDS 767, which is my primary plane that I use in FSX. In my testing the last few days I have also noticed that the ground textures behave differently when I am using the LDS 767 with native FSX paints using .dds textures. If I use other LDS paints using .bmps originally for FS9 paints but work in FSX, then I seem to get more problems in the ground textures.
I am wondering if not only the simconnect flooding is causing these probelms but if there is an issue with the way some video cards handle these textures when mixed with other things using .bmp's, like the LDS 767 since everytime I fly a plane that has .bmp textures I get more issues at this airport.
Frankly, as much as I love what FSDT did at this airport, I fear that it is almost too advanced in it way it uses the gorund textures, because there seems to be no leeway if you load it up. I would be willing to go back to their older style of ground textures, even if they are lower res and have no specs or bumps, just to make it easier on the system.
I am confindent that FSDT will be able to help us get this straightened out. Although I will admit I will be disappointed if I can never get mine to work consistantly well depending on which addons I have running a the time. Plus if there are going to use these methods to texture the ground in all their new airports then I am afraid I will not be able to use them the way I want.
BTW, where are your terminals in the last pic?