Thank you for the compliment on my skin. It made my day.
As for your suggestions, these are my responses in order:
#1.) The bare metal finish has been reworked 4 times, it's just one of those things that I can't seem to get to look right. I also believe that there will always be someone who is not satisfied with the out come but I will try to add some more age to the look of the skin. I did have the bare metal modeled over top of the default skin and was told not to do that so I redid the whole thing. I can try to increase the "shine" of it by increasing the opacity of the blue and white layer which seems to have disappeared in these screen shots.
#2.) Adding dirt to the panel lines is a great idea, why didn't I think of that?! But I'm not quite sure what you mean by "review the thickness".
#3.) This is going to be tricky to do since the colors for the prop are already merged with the background layer (my reference layer for the rest of the skin). It was an accident and I was tired, but I will try to reduce the yellow a bit.
#4.) I though so, if only there was a way to modify the material settings for the top and bottom separately.
#5.) I will get rid of a few of the points of weathering along the belly of the plane. I won't remove it from around the bomb bay doors, I personally like that and that would have been an area of heavy wear on the real plane. I will use the wings as a reference of how it should look since I was very subtle on the wing weathering.