We changed it to allow more flexibility. On some computers, the skins can overwhelm them. They are a huge resource, with the potential of taking up to 2GB of RAM, just for the skins.
This way everyone can just place what they want to see and use on thier own computer, without having to install all of them.
And like rogerdee pointed out, you now have a single source to see how many slots are available for skinning.