Hi Tom!
Thank you very much! I had a good time doing this, so pleasure is mine!
First off all I'm really surprised I missed this model of Mu-2 while going through buy-n-try of other paywares from that-big-xplane-store-you-know, for my round the globe trip. Your Mu-2 is fantastic and deserve more attention both from development and users.
Regarding GUI and other stuff - I would be happy to help wherever I could. Yes, this particular code if literally programming nightmare, tho I deliberately avoided all that nice looking things and optimization just to save time and make it simple.
I'm also bit concerned about manipulating with model and sharing parts of it as results since I yet not have your permission to do so.
So if you have any idea you think worth trying - just drop me a note. I could try to make it with LUA (also bit familiar with textures), prove the idea and produce general approach for solution. Or small fixes here and there. Then you could incorporate it to next version.
This will also allow end-users to try something new, provide feedback and make some noise.
Thank you again, and Best of luck!