A lot of people have rightly mentioned that porting over three of Bungie's games doesn't have any impact on their standing in the eyes of gamers. A point with which I readily agree. Also, the 20 GB day one patch is a sharp poke in the eye.
I was one of the people who was disappointed in the Halo 4 release. The multiplayer was a significant departure from what we've enjoyed from the series in the past and the story and new enemies did not keep my interest at all. I never finished the game. The graphics, however, were very well done.
As far as talking about the collection, the package as it exists is neat, but I dream of a real remastered game that they just aren't willing to spend the time or money to do. With Halo 4 level or better assets for all the games, redone cutscenes and maps also. The option to use any map with any game's version of multiplayer. If they had made this game I might have bought it. But they needed to get a huge sales bump for the platform now, and so this is all the game they have time to make, which is a shame.