Something needs to be done about teamkills

I've noticed a big trend of grenade teamkills recently. Half of my squad games, someone will be trying to kill the rest of the team by carefully throwing frags. Sometimes they'll use smokes or bushes to their advantage, sometimes they'll wait until we're trying to revive each other.

Its really frustrating, and it makes for a terrible game experience. I understand grenades are powerful and they need to be balanced (by self and team damage currently), but its been too much lately.

I would personally suggest: explosions (ie: barrels and frags) from other people on your team cannot kill you or bring you below 5% of your health. Frags would still require coordination and consideration to use without killing yourself or your team. The 5% hp would only make a difference in the situations where trolls are trying to kill you.