ain't that the truth ... I remember one time at the museam in Sacremento (CA), their Mig-17 had standard, garden variety hardware store bought sheet metal screws holding down some wing panels (I'm sure even the Russian AF didn't do that!!)
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back to the subject...
feature creep is a major bug-a-boo. The "just this one more thing ... just need to do ____ (fill in blank).
As difficult as aircraft are, terrains are, IMO even worse. One wants to make sure it (as accurately as possible) represents location XYZ in the Real World . Even if we all know that's impossible, not just with this game engine, but in general.
Personally, i think ALL modders - for aircraft, skins, decals, terrains, what-have-yous - are all borderline OCDs. Having crossed that line more times than I'd like to think (both in gaming mods, and in my career), I'm pretty sure where the line is.
Like Martin said above, and was pounded into my head by my instructors (as a mechanic, we WERE dealing with most likely the most deadly weapon ever designed by humans - automobiles!!), "Do it Right, Do it Once. People's Lives Are On the Line. And You Don't Get Paid To Do It Twice". Things like that.
Fortunately in gaming, nobody really get hurt!
But yes, there comes a point where "it IS good enough", and let it go.