I love this quest. TY TY TY TY
A couple of suggestions. I am guessing that the intended behavior was not for us to blow each other up, giggling like school girls. This is what happened though. I don't think this will change either. It is just to much fun. On normal, if it is possible, turn off item damage. I know that it is a risk we willingly take, but I am not sure that having perma damaged items is a result you were looking for.
One more suggestion. I am going to say it and I might get flamed for this -
Make a 12 man Blown 2 Bits instance. Make it huge. I will report back in February when I have got all of this blowing people up out of my system.