The option to see the indevidual polygons in a fuslage block highlighted and or etched, and maybe even paintable.
Or as Graingy pointed out as a variable thickness line.
Now why, for the love of all that is holy would I suggest that, you ask?
I feel like it would make custom color schemes easier to make and decal alignment easier. It would definitely make it easy to go back to fuselage decals and get away from label decals, because let's be honest, they don't look good.
As Graingy pointed out it would also aid in structural alignment.
Add on inspired by a post made by hpgbproductions, :
Fixing normals on smoothed fuselage parts
@andrewgarrison
@wnp78
You can get a similar ish thing by screwing around with Reshade, but from what I can tell Reshade is permanently busted in SP. You can't actually use it properly because of the weirdness with the depth map.
@Graingy didn't even think about that!
Alternatively, let the polygon edges be painted as a variable thickness line. Like inlet trim.
Would look sick if with high emission paint.
@Graingy I noticed this when working on my Ekranoplan, it also seems to affect the thickness of hollow fuselages and hollow glass fuselages. Definitely something I hope is fixed in SP2.
It is exceptionally annoying when you have a mirrored craft, but the polygons don't like up causing the two sides to look significantly different (e.g. a part shows through on one side but not the other).