Yes, NODROP would solve the problem of others trying to make a profit, but I think the disadvantages to fixers far outweigh that solution... ie. it's from one mob, in Inferno... to get to inferno u need the boots/ring... to get the boots/ring take a shed load of effort...
Now I don't mind putting effort in to get gear, but imo you're just shifting the problem to another camp, not fixing the real problem; that the gun is such a rare drop... but I guess you could argue that such a great gun _should_ be hard to get...?
<shrug>I don't think FC really care, they've said time and again they 'hate creating camping' ... but wot do they do to improve it... not much... eg. last patch increased drop rate of spec books, great! oh but wait, only on named mobs... so everyone has to camp the same mobs again... seems at odds to their stated aim of 'less camping' to me?
Anyway, <-- Fixer wtb Messenger Gun, will trade for a lapdance