The changes for the most part are ok. I kind of like the sleekish look. But there are a few things that did bother me and hinder gameplay to an extent. The items being on the opposite side really bothers me. Also the champion icons being on top of the mini map.
Overall I would rate the change 5/10.
Nice new look, old one was getting just that, a little old.
Reduces area taken up by menus so you can see incoming champs/skillshots.
Item shops looking fly as hell.
Changed position of items.
Made a dropdown menu out of your champions stats.
Changed where the teams champ icons are located.
Text is a little too small, really have to look at what you are trying to see.