what every artist wants:
layer 1
layer 2
layer 3
what every software gives:
layer 1
layer 1 copy
layer 1 copy copy
what every artist wants:
layer 1
layer 2
layer 3
what every software gives:
layer 1
layer 1 copy
layer 1 copy copy

@0xabad1dea @epsi So, you're talking about duplicating layers, not copying layers.
You should have said so in your original post. That would have been clearer.
But... You're not speaking for every artist, only you and maybe some others, because... I know from experience that if duplicate layer doesn't use this naming convention, but acts like add layer or copy layer, you will get dozens, hundreds complaints that the naming convention is all wrong, and fix it to copy of layer 1, copy of copy...
