More customization options in Item Sets page.
Something I have noticed over time, as I gained more and more champions, and my Item Sets page became more cluttered and more of a scrollfest. *outside of games I mean, on the profile screen*
What if, instead of just being able to organize pages by names/set champions, we were able to group them into "folders" of sorts, might make things neater, and easier to organize champions personally by whatever criteria the player foldered them by. For me personally my example would be putting all my support item sets into a group, all my top item sets in a group, ect...
I do enjoy how if you set a page to only show for a certain champion it adds them seperately at the bottom of the scroll window, but I envision something like that, but with multiple champions in a sequence inside of a folder to further group them based off player set criteria/folder names.
Again this being to help neaten things up while editting pages or looking through them through the out of game profile menu, not in game in the store.