the 6D doesn't have the side buttons or joystick either
Some of the side buttons were relocated to the right, but some are gone which is a bummer. The joystick is now embedded in the wheel, which is an implementation I prefer as it can free up space for more physical buttons. The removal of the side buttons is puzzling, however. It's like Canon designed the layout for an articulating screen but decided not to include it at the last minute.
5D3 owners are still left with the extremely expensive option of the WiFi grip which adds unnecessary bulk and doesn't double up as a battery grip. Canon should just discontinue that and just sell a WiFi dongle instead but I doubt that would happen.