Ok, not agree, just disagree then
As I said, way back (and posted the 'code'), I personally added shortcuts for all 3. It is not hard for the tech savvie I agree, but IMO WAY too hard for the average user, for whom the "shiny disc" is still the most popular way of consuming movies. And, again, if just about every other DVD player, hard and soft, offers a simple key assignment for this (do you know one that doesnt?) MC should to. The DVD menu especially is not the obscure rarely used feature you seem to think it is. If all key assignments that were used equally or less often than that by the average user were removed we really would be down to a handful. You obviously would not be bothered by that. I am sure most regulars here could cope. But is it sensible?!
But the arguments have been put, let others decide who's is most cogent!