My reaction to what we've been shown so far is decidedly mixed. I'll go into more detail later on when things have calmed down, but to summarize: I'm liking a lot of what I'm seeing, but just as much, if not more so, I am not liking what I'm seeing.
Now, I can't pass judgment on what 343 has in store for this perk system or whatever, but from Reach's experience, I think we can all assume the following. The more abilities we have in the game, the harder it is to balance, and the harder a game is to balance, the harder it is to support a game post release. An example of this would be jetpack on Isolation it breaks the flow of the map, and there are multiple playlists where you get jetpack on Reflection. From 343's support of Reach, it seems they are either unwilling or unable to give the game the kind of finesse it needs to meet their ambitions. Not all maps are the same; they can't be treated equally, and the more you have in the game, the harder it is to balance for each map.
With the news released today, it seems (can't confirm this yet) 343 is moving beyond that "start everyone on equal footing" philosophy of Halo that set it apart from the juggernauts of today. Halo was unique among the CoDs and the Battlfields in that it doesn't need sprint, it doesn't need weapon customization, it doesn't need that points system. It was uniquely Halo, and it stood out. I'm really worried about Halo losing its "individuality" so to speak with the type of changes we're hearing (not seeing, but hearing).
I hope I'm not being unfair to the game or anyone working on it. My apologies to Frankie or David if I am. I want to like Halo 4, and I'm trying to decouple my want for another "Halo 3" and my want for a new Halo.