My view of what Should be Halo 5

I have read many great ideas, I have my own idea adapted by the your Ideas, But I honestly think that Prometheans shouldn’t of came into the Halo Universe
We currently know that Halsey has teamed up with the Storm Faction (A faction of the elite community that still believe that they should return back to the covenant but abandoned the great Journey when The Prophet of truth was killed) They have one half a key made by the Forerunners to document everything about the Universe, However, The UNSC has the other half of the key. We also know that Requiem was destroyed by the Storm Faction to cover their tracks, for what purpose remains unknown. Finally before I enter the story we that Cortana is gone, Due to her sacrificing herself to save chief so he get could set of a nuke.
An idea for the first Mission, I think this was creative and Explosive
We start with a cinematic where chief is on a Frigate ready to be dropped, No talking just a alarm telling them that they need to drop, They cinematic keeps going from black screen to actual footage, Your dropping, Black screen, You see a frigate explode, Black Screen, You pod is clipped by a banshee, You pod spirals out of control and your pod door opens, Black Screen, You jump out, ( You may say that this is copied from halo 3 but I believe it works with the story, Please state if you agree about this ) You woke up in a dazed fashion, A marine is trying to wake you up, The captain says to the marine to get back to the battle, You see him blown to pieces by a wraith shot. A medic gives you a check and asks you to look up, Down, Left and right, Then the opposite way, Too see how you play. You start walking to a tent, The medic tends to the wounded while you walk over to the tent, When you enter you see a person and three elites, A elite General and Two Honour Guards, Then you speak to Captain Johnson ( Maybe related to Srgt Johnson from Halo 2,3. If you don’t agree with this then please state why in the comments ) Captain is asking if you are ok and tells you the battle plans. After you have finished observing the Battle Ground a Storm Elite ( Which is a enemy ) comes in and take out one of the honour guards, Then he goes for the Captain, You see a pistol on the table and pick it up, ( This is all in slow mo, If you feel like this is too much like COD then I do understand, I will change it if too many complain ) If you are not able to kill the SE ( Storm Elite ) Then another will come in and kill you, If you manage to save the Captain then the Elite General will save your skin
I will happily continue with this story if enough people ask, Like twenty people comment and say it is a good Idea, I understand the complaints and I will take it into account if you wish to change it

I forgot too add that this is set on the elite homeworld

I didn’t load up the campaign once. I was so disappointed with the MP, I wanted to invest nothing into the game and I sold it.
I never really liked any campaigns after Halo 1 anyway, but I played through them at least once, until Halo 4.

Halo campaigns are always ‘get from here to there, and kill the enemies you encounter on the way’. They don’t introduce interesting gameplay, and I lost interest in the story after CE.

Half-Life 2 is a great campaign because the gameplay drastically changes the entire time, and level design is very interesting.