Currently, we can only upload one skin at a time, and then put those skins into collections, and some people want to upload entire skin packs they've made, but they can't.

What I'm suggesting is, when you're submitting a skin, there is an option to upload a pre-made skin pack instead of a singular skin.
Another method for this would be to add a checkbox labelled "This is a skin pack," which, when checked, would allow you to upload multiple skin files (the layout, as a PNG).
When downloading the skin pack, it will download as a .zip file, and will contain all the necessary files for a skin pack to work (manifest.json, etc.)

I just think that this would be a great addition to the skin-making community, and definitely would reduce profile clutter