John, I included the link to the Standards for TDI and quoted it in my post. I even mentioned its rare to teach a DP that doesn't either include or already have some form of EANX, but that is the standard. Just showing that by you saying "it's required" isn't correct. Just like you saying Deep diver isn't "required".
So here is what I'm saying again......the PADI path to Deco and 150' "requires" more steps. That's not a bad thing.
You know Jay, I really like how GUE, UTD, ISE all require skills proficiency to be established before even starting their tech courses. Unfortunately, I don't agree with all their philosophies for one reason or another, so none of them work for me long term. But I do respect their skills and the very clear definition of pass metrics. Down the road, I imagine I'll get into teaching tech (but I have a lot of diving to do between now and then). I don't know for which agency, but I think I'd prefer to have those foundational skills established first by my students. Others may (or I should say: will) disagree.