As a side product of the logic I made for ModelConverterX, I have now made a little tool that will display some statistics about a FSX MDL object. This help you to get an idea of how optimized your object is for performance. The tool will show the amount of triangles, drawcalls and texture vertices for each LOD in your object. And if you show all details, then it can also show the amount of texture vertices and triangles per drawcall (and it shows the texture used if any, so that you get an idea which part of your object this is). You can drag and drop your files on the tool to show their statistics or just use the open button. If there are any more suggestions (or bugs), please let me know.