Yes. Wow, just wow.
If it's a rehash, then yes. I won't even bother to pick this up, and I'll proclaim it a failure. The 'Reclaimer' Trilogy should stay the hell away from the 'Covenant/Flood' Trilogy's gameplay and story arc. And from what I've seen and heard, it's not.
There are strong rumors circulating on the Halo Boards that The Covenant fractions and/or Flood will return as the primary antagonists (even though the Legendary Ending and Teaser indicated otherwise with the Shield World). I was hoping the Precursor/Forerunner/Promethean rumors would be the direction that 343 run to, but those rumors haven't pop up in quite some time.
If the Flood rumors are indeed true, then Halo 4 is merely a carbon copy of Halo 1.5 (aka Halo 3) -- only with CoD perks and enhanced graphics.
If I'm wrong, I'll proudly eat crow but we shall see. Right now, I'm not liking ANYTHING about Halo 4 (other than Master Chief's new armor).
Here's hoping I'm wrong about the gameplay, story arc and villain(s).