...and immediately, both players reach for their grenades...
Nikita, I agree with everything up to there. I've never seen anyone reach for their nades when another player takes cover, unless said cover was a small room inside a building. Nades do almost no damage, nowhere near enough for them to be useful. In RO ost I *always* ran out of nades, scouting bodies for nades was very important, in RO2 I almost always never use them, and neither do my team mates.