The Ground Pound is not going to work. It's just not. As soon as I saw it, I thought "Armor Lock?!"
The fact that everyone has the ability doesn't matter. More skilled players are going to abuse it and less skilled players are going to button smash it just to get a kill (or chance of a kill). I couldn't tell from the video, but it looks like the hovering player has the ability to quickly navigate where they land. How is that fair? Does that mean that a play can be half way on the side of a small map and see you in the center and simply GP you from nowhere without warning? And how does the GP work against vehicles? Don't get me wrong. I like the idea of Ground Pound, but in a MP game, it's just begging to be abused.

Speaking of begging to be abused, a Charge? Really? No one asked for that! Why? Because Halo DOES NOT NEED IT. It's sprint on steroids! I love Sprint, but I'm not foolish enough to ask for a faster sprint that gives me the option to kill in one use! Everyone will have sprint. That is enough. It's hard enough getting away from chasing players in Halo4, now we're going to have to worry about them also Bulldozing over us with one click?!

It's like someone finally remembered that Spartans have bootser packs (FOR SPACE USE!) and decided it should be used for all types of movability on land without thinking of the Balance issues.

I don't at all mind the options to boost to the side or backwards nor the Slide. Heck, I don't even mind the minor hover feature before the Ground Pound. Just makes those players a target. Those features seem to be balanced and makes good sense in multiplayer gameplay. But the Charge and Ground Pound....well you might as well give each player a rocket launcher that recharges.

My favorite part is easily the Climber feature. Something I've felt was missing in Halo for over 10 years. And it'd certainly make forge creations more interesting.

I' fine with Spectator mode so long as NO ONE in the mode can talk to their team-mates. This includes through private chat. Otherwise it's going to completely unbalance gameplay. It'll only take one spectator to give real-time call-outs to his team to screw up a game.