what have you changed in the original syllubus? What would you change? I'm talking about actual forms, techniques, kick tests, etc.; not necessarily theory at this time.
Actually I like and still teach the original colored belt material. Think about Bruce's comment about the material seen through begginers eye's. I remember my first three years to blue belt. I thought everything was awesome and at the time (early 80's) was way more sophisticated then the other arts out there. The basic locks taught in baby steps, the 3-step routines all fit at the time (with supplemental focus mit drills, full contact sparring, and basic wrestling). They were new to me and I thought good basic building blocks.
What I am changing is number count. There is just too much of each set. I would re-organize son mok sul as its a mish-mash of tech. from a static wrist grab. Organize it acording to how your opponent graps you (palm up or down, bent arm or straight, pulling pushing) or by type of lock. For Il bo dae ryun, insted of 30 different, six is plenty. Just have them do it more, so instead of trying to memorize they actually will build muscle memory and learn timing-distance (which is what its for).
I also start teaching locks from white belt. This is where static grab and cooperating partiner is needed so they can learn a lock without distraction.
Six different wrist lock angles in the static to understand the basic and six self defense tech. - usually emphasizing first an escape, then a stalling or shocking strike, then a simple follow up.
Then when SMS is introduced they can think more combatively and ad punch block, footwork and more animated attacks.
On a side note, one thing lacking in my early training and most of HRD is falling or rolling naturally from every technique. I used to disagree with what I thought it was from watching Aikido classes and got annoyed that they where just cooperating with each other , never learning to deal with resistance. But if you train both ways it's invauable to learning flow and conditioning.
It is when we get to the geen belt material and above that I see major renovation needed. That should probably be discussed amongst ourselves as its way detailed and complicated.