Good catch. I haven't made one. That's something I can work on. When I first started these... I didn't know it would be a full series with tons of vids. Thought more of a "request here and there" sort of thing.
Actually, I went back to fix this and I do have a "should you take... to the next level" playlist that all of these are already a part of. Check that out.
That's just an advise that you don't have to follow if you don't want to, but it likely would be a waste of resources if zTaker wouldn't be your first 6sg and you can't make anyone better to 6sg