This is going to be on the level of blasphemy, I know. But I remember during the early Nothing Bundt Cakes days their cakes were beyond moist with an out-of-this-world cream cheese frosting. Then after a few years, I started to detect some differences - the cake was sometimes moist and (God forbid!) they started cutting in regular glaze frosting into the cream cheese!! A small part of me died. I used to joke with my co-workers exclaiming, "I could dive into that center pool of cream cheese!" But alas, the business has succumbed to the old "maybe the customers won't notice if we pull back a little on the quality." I have news for Nothing B-Cakes - this customer noticed..
But, you have nothing to worry about. You have many fans and will continue to thrive as long as the majority don't care about slight slips of quality; however...be careful how far you decide to go.