Holy crap, that looks better in person!
I really like that V5 Battery, and it looks like it can last a very long time without getting damaged, as well as I love the way the controller is built. Probably, as what I can see, VEX is trying to transition us from having a second battery to just one, which, in my opinion, would be really nice and more space efficient. Although many have complaints about the controller, personally I think it will be much more comfortable to the hand, as well as looks like it's built to easily switch between the joystick and the buttons. (EDIT//: Also, a great amount of drones' controllers have that layout, and it's really comfortable) The sensors look like they can be easily opened for faster replacements, as well as I like the idea of interchangeable cartridges on the motors to change RPM's. I can't wait for release, and I especially can't wait for the vision sensor to come out too :D