Perhaps they could make the cabinet the same kind of height(width?) as the M60...BUT!...they could use a secondary baffle(over the cabinet baffle) to extend the centre height a little for the upper-centre mounted tweeter.

So...a reg cabinet, with a 3/4"(1/2"?) baffle added to the face, with a hump at the centre to mount the tweet. This will keep the overall package narrower, and the front baffle can extend out from any stands or HT cabinets, thereby clearing the "hump" if necessary(ie, if the shelf is narrow and won't clear the tweet).

Half of communication is listening. You can't listen with your mouth.