I agree with this point, though reluctantly. I do have to admit that the gear I shoot at one match is the same gear I shoot at every match and I have not been in violation of anyones specialized rules. I dont try to "game" the equipment, I just go out and shoot the best that I can with what I have. I do read the match rules before I get on the road and like at BRM3G, I had to scamble around and figure out how I was going to sling my long guns but it wasn't a big deal, I just had never been to a match that required slings. It was lots of fun to shoot so I was glad I did it.
The bigest problem with unified rules is that unlike major USPSA matches that use the same core RO's, the multi gun matches use mostly local help. Obviously we are glad they help but they may not always have the experience that the USPSA RO's have.
Scoring...i did like the Horner system. It was simple and forced more people to actually look at their sights but really i dont pay much attention to what scoring system the match of the day is using. Again, just shoot to the best of your ability and dont worry about it.
But, if it were good for 3 gunning in general and would potentially draw more competition then I would be for standardizing all of it.
2 cents....