Good video.
I hope 343 ditches this "accessibility" hard on with Halo 5.
The Mantis is an awesome vehicle, just putting it out there.
My only dislike is that it's a defensive vehicle. Save for some of the obvious things like energy shields I'm not a huge fan of adding mechanics designed exclusively around defense because it slows down the gameplay too much - see Armor Lock, for example.
The Mantis, likewise, has a considerable amount of health for a Halo 4 vehicle even if an Incineration Cannon can one-shot it. This is also somewhat exacerbated by having such powerful armaments. Couple that with the personal shielding, people just end up turtling with the mantis and crouch-walking on Ragnarok. If they had put more emphasis on the stomp, made it slightly faster and required it to get in close to do any significant damage I think I'd be a little happier with it. As ridiculous as it sounds, giving the Mantis some kind of vertical movement option like jumping would be hilarious, too.
See the Chopper as a
really really good example of a vehicle with a good mix of offense and defense.