I highly advocate for the friendly fire experience. If teammate projectiles could be dodged when going into stealth or “ducking”, that may give an option besides full rotations for every attack. Some magic skills are somewhat moot in tight quarters when playing with a friend wielding melee.
I haven’t tried it but can’t you dodge friendly fire, given your timing is right?
I guess the point would be to coordinate but not be forced to drain stamina. A direction to “duck” or stealth would make sense to me to stay clear of the projectile