I agree, the maps, the guns, the killstreaks, etc. Maybe someday they'll get back to Call of Duty 4-style gameplay at least to some degree. If not then an HD version is more than welcome lol
I don't know why they never put night vision in the game again instead the devs are trying to hard to 'innovate' and look at what we end up with, attachments like the Target Finder.
That game had so many things more right than wrong.
I think the grenades (mainly because of martydom) were really the only thing that IW got wrong in CoD4. Although somewhat annoying even to this day I laugh at the crazy grenade feeds in that game