IGN's Halo 5 podcast Sums H5 up for me (spoilers)

Yeah so as the title says, has anyone watched IGN’s Halo 5 Reactions podcast? Especially the part covering the campaign story, it sum’s up how I feel about the Halo 5 campaign perfectly for me.
I’m someone that has read a lot of the books and like’s to read up on the Halo lore, but I did feel there was a lot of points that were either swept under the rug to quick or things that just did not make sense as evident in the podcast.

Link to podcast: Unlocked 218: Halo 5 Reactions (SPOILER WARNING) - IGN

Another big point that was not even mentioned in Halo 5 and was not overly explained in Halo 4 is what the Librarian has done to 117, to ‘evolve’ his body. I’m thinking there has got to be more to it than just been able to survive what the Ur-Didact was doing….

Was posted over on Reddit, Thought would see what Waypoint community had to say