Riot wants us to run more.
Look at the new splash arts; Talon, Tristana, Alistar, Singed, Katarina, Ezreal, Rek'Sai, even Gragas is startin to get exercise. All the splash arts have these champions running! And then, to further my theory, look at the newest champions released - Gnar, Azir, Kalista, and Rek'Sai. All extremely mobile with some sort of dash/jump/burrow. Riot is saying that slowly they want us league players to lose weight and start running. Why, Rito? I just want to play video games. :(