New Realm possibility?

I think it'd be cool if Riot were to take a break from new champs for a while (not new skins) and work with the story creators to create a brand new realm and introduce a couple new champs from said realm with release of it. I know each realm has it's own specialties based on either technology, magic, void, etc. Not sure what else they could introduce, but it could open up to some new champs with some different gameplay styles. I'm sure others have thought of this, maybe even Riot, but just thought I'd voice it and see what others thought. Not much to the imagination on my end, so would like any ideas others would have of what this new realm would concentrate on.