Personally, I like the two buck limit. I set a goal for myself every year and it usually is to shoot the first 115" or 120" buck that comes into range. I have set a standard that if I shoot a buck, I am going to get it Euro mounted. I see no use in having a wall full of 2 and 4 points, just doesn't make sense to shoot those bucks. The second buck tag is saved for one that will do on the wall. This year, I'm looking for a solid 150" but will probably go down to 140". If I don't get it, oh well.
I think with the two buck rule though there should be an antler restriction. 8 point rule on the second buck. Thats just me though...