Note: I don't expect you to understand the reasoning behind my approach.

For this, we are thankful.
But at least at this stage, a user doing custom modifications to pages generated by views isn't possible. The skin templates could be modified to add content to every page they create, but that would require some coding skills. With some skins, that would be a very tall order, indeed.
ETA: On the other hand, most skins provide you with a way to insert your own code into the pages they create. You can often add material to the <head> section and/or to the <body> section.