I personally loved Spartan Ops. It made me feel like I was a part of the halo universe. The CGI cut scenes were phenomenal, the story was interesting, and the RvB Easter Eggs were hilarious.
One problem with Spartan Ops was that it made you play the same maps over and over again. Another problem was that it felt like it was more of a horde mode rather than a mission. Even though it wasn't bad, there was nothing that was amazing about the gameplay.
Spartan Ops for Halo 5 needs a larger variety of maps, more epic gameplay, and new objectives/features. 343 needs to give the community a reason for us to keep playing Spartan Ops. They need to make players want more episodes and missions.
It would really suck if Crimson, Majestic, and the rest of the Spartan Ops characters did not make a return because of a few flaws in Halo 4.