I see the arguments about the size and placement of the LCD, but ...
Was a DMD an improvement over the older scoring mechanisms?
If you say "yes", then I don't understand your desire for no LCD. An LCD will improve the interface between the players/audience and the machine ... and I put players in plural for a reason. It provides something to look at for those that are not currently playing the ball, and it provides more information to the current player on the status of their play (modes, etc.) Just as the resolution helps makes the picture clearer, the color conveys more information. It is win-win.
Embrace new technology.