I understand the conecpt of if it's not broke, dont fix however enovation fules sales it's proven. Take the m&p, allot of departments are switching because of the interchangable back straps. When you buy a gun, it will not fit everyones hand the same. Take Kel-Tec, they really do not follow suit. I think they make some of the most unique guns out there. I saw a write up in the new issue of Tactical weapons for Military and Police. They are designing an M4 style rifle, where the charging handle in on the left side of the rifle. I think that if you do not continue to enovate, you wil eventualy fall behind.