Breaking the meta

Hi guys.
I would like to know your opinions about "how to break the meta".
New skill tree?
New perkdeck?
New weapons?
Any idea you come up with.. I want to know them all!
Join the discussion here at Mod Workshop and/or on the official group here
Replies
So like your buddy is downed in an open area. You throw the grenade and buy some time to revive.