1. Item sets. While your files from past item sets are still working in the game, they are not accessible in the client.
2. Ability to see how many normal games you've won on your profile page.
3. Ability to see your top 11 mastery champions on your profile page, not just the top 3.
4. Notifications ***didn't*** cover the Loot button, the Store button, and RP/IP indicators.
5. The friends list/sidebar was collapsible.
6. The store wasn't a maze to navigate *(why are the Hextech Chest sets under the "Accessories" tab, and not the "Bundles" tab?)*.
7. Your RP/IP displayed the amount correctly most of the time.