I saw this addon on Armaholic that allows you to open/close any doors/gates slightly with left ctrl+mousewheel. I then thought, "Why isn't this in the game now?" because with modern military tactics to breach and clear rooms it may involve throwing a grenade into the room by slightly opening it; then closing said door while waiting for the said thrown projectile to go off. Then clear the room if any surviving hostile's are present.

To be more broad, have the ability to open/close any doors/gates slightly.

More information to regarding my feature request can be found in the "Additional Information" Section.