I don't disagree with your description of vinyasa classes as concentrating more on the flow and moving through the transitions. That's what I didn't like! I like holding the poses, taking a little break, and moving on to the next one. Some poses seem to work better to do the quick transition thing, and I am always a few steps behind when I do those dvds. Trying that, after a few years of the other type of yoga was not fun for me, and I wasted some $.
Funny, I was just looking at some 200 hr. yoga teacher training programs. If I want to be a yoga therapist, I have to have the yoga teacher cert. first, and then do the therapy training. I just don't know what's worse; giving up one weekend a month or 2 two week sessions. I am so not willing to give up my time for riding and skiing, etc. Of course, I'd be willing to not work for awhile to get this done!