Having just read through the majority of this thread again, I'm pretty sure I can see where the biggest problem lies, and potentially a solution!
Firstly, lets go back and see what DSC 1 is actually about.
DSC 1 is aimed primarily at 'ab initio' stalkers. It gives an excellent (albeit theoretical) start to a deer stalking career. There is a clear requirement for this course at this level, and most, if not all beginners that complete it, hold it in high regard - FACT!
Your 'business metric' (if you insist on one) is that complete novices are taught all they need to know to operate safely, within the law, and the basics of large game meat hygiene. I think we all agree that there is a definite 'need' for training at this level, and the improvment is fully 'measureable' in the form of an assesment at the end resulting in a pass or fail with a certificate issued to successful candidates.
So, it would therefore be fair to assume that this would be a suitable 'entry level' standard for us all to hold as a minimum? If so, then we should surely ALL hold it to give us credibility as a whole?
But then comes what I perceive as the main problem!
Why should existing experienced stalkers have to go back and do the basic course?!
Some are way above this level and would clearly gain no benefit or 'improvement' from attending such a course.
Some would learn something new, but are probably operating safely already and within the law.
Some might think they are doing everything right, but aren't, and don't know any different!
I'm sure there are a few more categories too, but these three should cover most of us!
So, should any of the above have to do the course?
Well, the simple answer is NO!!!
Nobody 'Has' to do the course, and probably never will.
What you might have to do though is the assessment!

You do not have to do the course to take the assessments!
It is much cheaper this way also.
So...
Here is a solution.
If you think you are good enough, why not just do the assessment?
What could be difficult about that?
It would be no different than all of us that have been driving for years re-sitting our driving test. We are all experienced drivers - what could possibly go wrong?

HMmmmmm!
My point is, that things change with time. Standards and requirements also change. You may well have been doing it for years, but are you doing it right and could you be doing it better? If you truly believe that you have stopped learning, then you should probably stop stalking!
If you truly believe that you are above the 'minimum' required standard, then prove it to yourself and others by passing the test!
Please feel free to discuss further!

MS