Halo 4 Information Leak opinion

A lot of the information from the leak surprised me and I believe it will be a very different Halo, but I believe 343 know what they are doing and play test it enough to make it amazing. What are your thoughts about the new leaked info?

For those that haven't seen it:

Verge article: http://www.theverge.com/gaming/2012/4/7/2932967/halo-4-spartan-ops-infinity-and-more-revealed-in-game-informer

Original: http://www.neogaf.com/forum/showthread.php?t=469395