Whenever I see other people's project windows, I don't understand why they don't change the icon.png. I like to change it so I can easily see what project I am selecting. Having to rely on just the name would be a pain, in my opinion. 
Why not change icon.png
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Maybe because it's too much trouble.
Github generates user avatars based on the hash of a username. A Godot add-on should be created for generating project icons based on the hash of the project name, when you don't want to bother making a custom one.
https://codegolf.stackexchange.com/questions/82290/generate-a-github-avatar
DaveTheCoder
I imagine most people wouldn't just get an add-on for something so mundane.
Would probably work better if it was a standard feature.
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You might have trouble convincing the project team to incorporate that critical feature, since it could easily be an add-on.
But if you submit it as a proposal (or pull request), I'll add my vote. 
DaveTheCoder
Thanks, but it's not really a feature I need, since I already change the icons myself anyway.
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But it was your idea. 
I change the icon for any project that is decent. But I have lots of little tests, like checking a code feature, where there is no graphics and thus no icon.
But it is a standard feature. It's in the project settings under under Config, which also sets the icon for the exe on export, so I bet more people use this than you think.