[quectophoton]

To me the only open source license that seems to make sense without imposing on other developers, is the MPL without copyleft exception:

"Do what the fsck you want with your code; as long as my code and any modifications to it are available under the MPL, I don't give a sheet what you do with the rest of your code."

Also, when another license is incompatible with the GPL, I see it more as the GPL being at fault, because it's literally only compatible with itself unless you explicitly add exceptions. It doesn't matter if another license grants the exact same freedoms as the GPL, it will be incompatible with the GPL because it has a different name.