TH are you saying that the master diver cert should only include things that make your buoyancy better? Isn't someone a better diver when they understand part of their diving environment better? PADI photography cert does include discussions and in water skills on buoyancy, a huge component of becoming a better photographer. It sounds like some don't like the master diver cert because it's not just "hard core" skills. Again is there a problem this causes for you or the dive community as a whole with the master diver program as it is?
The value of any class be it diving or otherwise has to be determined by the person taking the class. If it is of no value to me I don't take it, not saying someone else can't get something from it. Do these classes and certs harm the diving community in any way?
Better buoyancy only... No, Deep Diver and Underwater Nav courses contain stuff regarding safety and efficiency other than buoyancy. Perhaps even Night Diver and Wreck Diver (assuming one plans to do the very basic penetration and it is taught). Search & Recovery-- you may be searching for a lost diver.
Value of a course: All would agree the instructor is the main factor. Everything has some value to whoever takes it, but that doesn't mean you are a better/safer diver. Zombie sounds like fun, and that is value.
Underwater Photog: Yes, I've heard of course that there is a big buoyancy component. But you're supposed to have good buoyancy regardless. PPB on the other hand is all about buoyancy, trim, etc.
Understanding the environment = better diver...A stretch. Yeah maybe somewhat, but a lot of that seems just logic and something you can just ask about when at a new locale. Plus, PADI says never touch anything anyway, if it's an ecological concern.
Problem with the community: Apparently there is one--note the many past threads on PADI MSD (by the way, sorry to all for rehashing this, but I wanted to reply to a post that already brought it up). When I saw that Zombie goes toward MSD, I just thought there's another knock on my MSD Cert. "suitable for framing". NAUI folks must enjoy this.... I personally don't really have a problem with it per se, just an opinion, as I know what I learned to get the MSD.