Even though you might be right, Winamp is changing. The old team is gone, the Winamp client we are so used to will change with the next major release, and the incomplete skins have a limited shelf life in the date base.
As for me, I have always turned away skins submitted that updated other skins, exactly as I am promoting now, quite an irony I would say. However, if incomplete skins get purged from the database, they are lost. I'd rather have them updated than lost.
That being said, I do want to preserve the original design, and that is why the restrictions on how to update these skins. The product that will be published after the update will be the original skin, unaltered in any way, with the addition of three new bmp's that will be produced in the style of the original work.
It would be nice if the authors could all be contacted to let them know their skins require an update, but even though that might be possible on a lot of them, it is not as easy as it used to be, as e-mail addresses are no longer published.
Also, with the move to this new design of the website, and accompanying review system, we have also lost the ability to update skins on the original authors skin account, that is why we will have to create a separate account for these updated skins to be published under.
On a final note, the original author will have the right to update his own skins, and his update will trump any update someone else might have made for it. Failing that, the original author will also have the right to request the removal of his work from the database.
I know a lot of authors don't really want to be bothered with their skins anymore, but don't really like to see them summarily removed neither. This would be a reasonable compromise.
Now as for a tool to automatically do this, a tool could not get everything just right. The additional bmp's would still have to be edited by hand to get the desired results.
Now you can also help by directing as many original authors as you can to this thread.
"We are all faced with a series of great opportunities brilliantly disguised as impossible situations." ~ Charles R. Swindoll