Secretly, I was really hoping for both of these titles to be included, but that’s not going to happen according to Frank O’Connor.
In speaking with OXM, Frank O’Connor gave them a pretty specific reason on why Halo Reach and ODST would not be making it into the Master Chief Collection saying, “The honest reality is that we had to cut it off somewhere, so what we needed was for the near-narrative of the Master Chief saga to be there. ODST is a side-story, Reach is a prequel, they didn’t need to be there. So if you’re going to cut things, you should be trimming the fat. I wish we could have done it all, but it would have been impossible in the timeframe we had.”
So, for those of you wondering, there’s your answer. Just not enough time. But hey, this is one remastered collection with incredible value so I’m completely OK with those two games not being included and you probably should be too.