Suggestion: Skin Type Sorting and Rewards?

I think it would be nice if a sort function were added to the skin shop where you could sort by type, such as by "Pentakill" skins or "Shurima" skins.

It would also be nice if, should someone collect all of a single type of skin, there be some kind of reward for all the spending and effort. Something simple like a special icon, ward skin or some such would be good.

I say this because there have been a lot of specific skin types being released, and you know how people are when it comes to collecting things. It would be another incentive to buy skins and would also make it possible to find all of a certain type of skin easily.

A last idea would be some lore explaining the various events in more detail, linked to each skin the same as lore is to a character. What's the "warring kingdoms" about? What's "Arclight" besides an interesting word? I for one am drawn to characters as much by their story as their appearance, so perhaps some background on the concepts for the skins would be welcomed as well.