In my workshops I never advice on the benefits of a higher MP camera. Never. Because I often got guys with very low end and outdated gear who did better photos than the guys with MF or whatever luxury devices. My constatation is that a lot of MF shooters are not even ready to shoot even a D200 and lack some basic understanding of lighting and photography in general, wasting time and energy on 1k$ tripods to produce files who do not worth it. In + it slow down considerably the course of the workshop when you have a limited time to climb a mountain or another circuit. For my Scotland workshop I almost warn ppl to not bring something heavier than a D700/800 + 70-200. Even that is heavy when you walk around 6 to 10 hours in a day.
Meanwhile, the guys with light gear and few MP snap all around, having fun, having time to discuss life and enjoying the wonderful landscapes. Often, the "best pictures" come out from a snapper with inexpensive gear while the MF guy is in his room trying to PP his huge files on his MBP.
MP are ok today. We need lighter MF gear ASAP, digital mamyia 7 for example ... This will bring the workshop world to a new era.
That does seem to be a serious omission, Hulyss.

Although, to be fair, I do understand that some people can get very emotionally attached to their equipment. If a tutor at a workshop were to start implying that certain individuals had inappropriate, or less-than-ideal equipment for the task at hand, such people might get offended and not attend any future workshops.
One of the first things that should be learned in photography is the fundamental principle of
'the best tool for the job'. That's universal and applies to all crafts and arts.
One should not be seduced by a high megapixel camera
if the consequence is a lack of usability for the type of photos one hopes to capture. In fact, this was always one of the main drawbacks to the MFDB system, for me.
Despite my already owning a Mamiya 6"x7" film camera with a couple of Mamiya lenses, and despite my great attraction towards high megapixels, it never made sense to me to splash out the money for a 40mp digital back. I could see that such a system was not only ridiculously expensive, but heavy and cumbersome, and generally lacking in flexibility, with relatively poor high-ISO performance and a greater need for the use of a heavy tripod in order to extract the benefits of the higher pixel count.
Such a system might be fine for studio shots, or for shots of landscapes that can be accessed by an SUV carrying all that heavy equipment and accessories, but clearly wasn't suited for my type of peripatetic photography.
My first cropped-format DSLR was the 6mp Canon D60. My latest cropped-format DSLR is the 24mp Nikon D7100. There's absolutely nothing that I could have shot more easily with that 6mp D60. In fact, the reverse is true. The D60 body is even slightly heavier than the D7100.
If I were to claim that my best images were shot with the D60, (which I don't claim, I hasten to add), then that would indicate that either my photographic skills had deteriorated over time, or that I just happened to have been at some interesting locations with my D60, which had presented lots of photographic opportunities and which I'd never revisited with my D7100.