What new ideas or interactions would you like to see within Champion kits?

For the past year and a half or so, the Champions Riot has been designing and releasing have been introducing a LOT of new never-before-seen concepts within Champion kits, such as

's Wind Wall and 's Unbreakable stopping projectiles 's semi-controllable transformation conditions 's soldiers and the almost RTS feel he brings having a two-part ultimate that requires cooperation with her Oathsworn being able to burrow herself, reducing her vision range to almost nothing but in return being able to use her Tremor Sense to "see" the movements of her enemies. 's entire freakin kit (except maybe his Q but even that's kinda unique in its interaction with walls) being able to reverse time for himself and go back to a previous location

With these new concepts being implemented in these champion kits, suddenly so many new possibilities come up when you try and think of what they can possibly put on a new Champion.

So, what are some small concepts or ideas you would like to see one day implemented into a Champion kit? Maybe a Champ that best encapsulates the idea of a "Flying Champion" the same way Rek'Sai is a "Burrowing Champ"? Maybe a Champ that uses their accumulated Gold as some kind of resource for a spell? What about a Champion that is somehow able to control an enemy Champion's movement or spells?

(Also not sure if this is the right place to post this kind of thread. If not I'll repost it hopefully in the right one.)