Safe, now I loved season one of Spartan Ops, I loved the fact I was able to explore more elements of the Halo lore apart from the Chief and because of this I was not overly bothered about the highly repetitive procedure of killing things a pushing buttons.
Please be aware people, Spartan Ops is a HUGE project. Crafting around 50 different play spaces would have added months to the release date of Halo 4. To ignore this I looked at the maps as they are the same layouts and aesthetics just set on different parts of the planet and the Forerunner Builders just copy and pasted parts of their design whilst constructing Requiem to save time due to the Flood. (Yes, i’m that sad.)
Respawning - ADD A CHECKPOINT SYSTEM FOR SOLO PLAY, WHICH WILL MAKE THINGS MORE CHALLENGING, MORE DRIVE TO STAY ALIVE RATHER THAN GRIND KILLS AND GET DEATHS.
Maps - Now if you noticed in the last few missions, different and new parts of the same maps were being explored, this means that you will have make less maps - just reveal more are more of it as time goes by = Less replay & recycle.
More Trolland - Roland is by far the best character in Halo, and in my opinion is the most human. Do you know why? Because he has a sense of humor. At not one point in the main campaign did I even produce a mild laugh as I was forced into constant depression by a certain blue woman, who kept moaning at me and breaking everything. (Well, that’s a pretty realistic woman but I digress.)
Jared Miller - Please explain to me why a Spartan is running Ops in a control room and not with all the other Spartans in the ground, is he handicapped or something?
Combat Dialogue - You really need to record more variation for Jared and Dalton, seriously there I started to cringe every time Jared marked those targets for me.
Blandness - Add something extra into gameplay, for example Spartans with personality fighting by your side. With majestic team, OR the Rooster Teeth team (or whatever they’re called) Or a specific objective, like take out a herd of 200 grunts or fight your way though a small army of vehicles. (Shootout in Valhalla = epic! You know, rice and spice it. I also love the ops where you have to snipe to defend the engine room of infinity. MORE STUFF LIKE THAT 343!! 
Palmer - I hate everything she says and does. She has so much disrespect for everybody, hates Halsey (without which nobody would be alive) and should be promptly be written out in a click of the fingers. (ahem, Kat, boom headshot, sorted.)
Input from Quetzocoetl:
Skulls - It would add replayability, and would just generally be fun. Ideally, I want to see more than just what the Campaign provided, I want to see CEA’s and Halo 2’s skulls make a comeback. Maybe they could be unlockable as players accomplish certain tasks (Commendations, # of Challenges, Certain amount of episodes/chapters completed on different difficulties, etc.)
Theater support - This one pretty much speaks for itself.
Exclusives - One of the wonderful things about how Halo handles maps means that when new map files (as in multiplayer maps or Spartan Ops maps) are added in, those maps can contain anything, even completely new weapons and vehicles. Though those things can only exist on those maps and no where else, Spartan Ops would be the perfect place to add in such things, as they don’t have to be as balanced nor as heavily incorporated as multiplayer weapons/vehicles.
It feels like you’ve had a huge ambission but just got bored while making it. I will be buying season two, as i’m addicted to the Lore, not because of the repetitive gameplay.
Thank you for reading!