Bill, I guess that I was not clear, because I do generally agree with your take but feel there is some room for compromise. I think something like a Spryte or a Snow Trac with a 5+ passenger cabin, or a small cabin with a cargo area could work. I also think that much of the difference between a snowcat and a go anywhere vehicle is in the tracks. We both know, and understand, that a DEEP POWDER set of tracks are totally different that a set of MUSKEG tracks.
I suppose that if I were to type up all my thoughts it would fill more than a few pages, and I suggest that yours would do the same.
But realistically, I think a PLATFORM VEHICLE could satisfy the needs of about 80~85% of the users if it had various track options. The track that is best suited for your deep snow is going to be wider and higher floatation than the track that I would find suitable for my ice-snow conditions. I suggest that Joan (Pixie) would probably prefer an all season track that will allow her to manager her timber. But all those track issues aside, the base vehicle could be an adaptable platform that would allow for the various track configurations/types and it would easily satisfy most needs.
Again, I am saying MOST needs, not all. For a commercial venture to succeed, it strikes me that it either needs to find a specialized niche and make a specialized product, or it needs to fullfill the needs of many with as little compromise as possible, and to do that it would require some level of flexibility in options. In this case, the main options would be the tracks, just like on a Bombi, where there were narrow or wide track options, or the differences between a Snow Master and a Snow Trac where the primary difference was tracks were wider & longer on the Snow Master.