Player and player:
The ability to push and pull people could be really helpfull if you are playing with newbies. I used to play with clans where i found myself fighting between people that would get shot because they werent into hard cover. Would be nice to Pull them back or push them into some cover.
Objects:
Dragging of crates pushing of other stuff.
Vehicles:
Things like bikes and or ATV's can be put back up