How I think the Leona changes went down.
https://66.media.tumblr.com/5fe4c129d94724cad309a594ec05e1a6/tumblr_oaa5waqDbe1sj4s9no1_500.jpg
Apart from the CC buffs, witch are awesome, I don't see these changes doing a hell of a lot for her at mid to high Elo.