the SSE Blender2KT link for download is not working
one thing about adding a GUI .... i was thinking that maybe adding a py script for advanced material export would be good for both Blender2KT and the Blender2KT script version ( similare like SU2KT makes it ). I could send you some material and you will see that a lot of settings dont have to be changed at all and that they can serve as a "standard"
have a look here please
of cause we could creat more materials for specific needs like glass , frosted glass, sss ...etc.