How dare you mock us and our covers... we like nostalgic scratches... JK.
No actually some uploads are from the time before quality standards were as strick as they are now, some "crap" still gets past unnoticed.
You are more than welcome to clean and better them.
Just remember not to use filters as they tend to lose finer details.
Upload them to Mediafire or Box as those storages don't fuck up the uploads.
And I fully agree that mission of current generation is to store and if possible better the artwork.