Design a line of panels a CB's entirely unlike any others (similar to FPE and SQ D) and this "problem" will be eliminated.
Don't want other brands in the panel? Make your panel different than the others...
Murray must be going broke to worry about lost sales like this (don't try to convince me that the reason is otherwise...it's always the bottom line...)
-Virgil Residential/Commercial Inspector 5 Star Inspections Member IAEI