I have many wishes for Halo 5 but my biggest one is this ...
More open levels I became a huge fan of this idea after I played killzone shadow fall it really opened my eyes on how to make a really good campaign here is a example of a mission ......
There are hostages in the building do you go in .....
Guns blazing
Sneakily
And there are many ways to 2 both do you
repeal right into the of the action
Down the side of the building
Or do you
Go though the vents
the backdoor
What weapon do you take with you
A smg
A shotgun
Grenades
C4
once you are inside do you
Open the doors and quickly kill everyone before they can fire with the silenced Smg or .....
Blow a hole in the wall and kill everyone ( doors are for squares )
If 343i could put this level of openness into the Halo 5 campaign to may be the best campaign in the series.