if you want them to think it's in their best interests point out it's a reason for a cob collector to buy another cob. They don't have that much competition which might make them slack on the innovation or variety department.
Forum members haven't kept them in business for over a century, online smokers are a drop in the bucket compared to the majority of MM's clientele. MM has made many special edition pieces that were never listed on their site for events and pipe clubs, and their regular production models have had enough of a following to not need change. Pieces like their reverse calabash have only been offered in limited supply twice due to lack of availability of the precise cobs needed for the design, and some years during draught, their larger pipes weren't even made because their corn supply didn't grown sufficiently.