I'll voiced my distain:  Anything that can effect a games outcome should not be allowed.  I'm walking down a hall and my partner gets startled by the spray and shoots.  I'm discovered.  This is giving the partner credit enough not to be startled by me, even though I am on radar, and shoot at me.

Tangent topic I would love a FF server to build up a better pub player base.  Of course strict enforcement would be required and fun slay/forgive options for tkers.  I had this on my old server and it was 40 ppl w/ !block.  Deploy and comeback to it gone.  Oh noes!