I've been wanting this for a while, but how about something that automatically refreshes effects you get for entering cover?
This way, when it becomes available rather than having to jump around to different places of cover or standing and going back into cover, you simply regain the buff?
Off-Hand I can think about the Ballistic Dampers and Snapshot which would give a 3 pack of dampers and an instant snipe every 6 seconds while you remain in cover.
It would be nice.