Well, for me Halo 3 was just flat out more fun to play than Reach and I like Reach a lot. I agree that it offers way more in terms of variety and I think Halo 4 will continue in that direction. I can see 343 going above and beyond in offering a multitude of gameplay choices, especially in multiplayer. I would also like a BR again as well as some crazy new weapons. I'm pretty easy to please campaign wise but I like the sci-fi aspect of Halo so as much of the universe as they want to expose me to, the better.
I think Halo 4 will bring the franchise back to the limelight with Master Chief 's return too. I don't expect it to be COD or anything but I'm sure it will have some impressive sales none the less. I can't wait to see all of the hooplah leading up to the release, especially the epic live action commercials. You know MS will spare no expense for their baby so be ready for all of the crazy Halo advertising and the venom spewing haters shit talking how MS spent a hundred million bazillion dollars just on advertising Halo 4........I can't wait.
I LOVE paying for Xbox Live! I also love that my love for it pisses off so many people.