I think the above is critical ....but if I may be so bold. Rather than create an entire form to teach specific principle or strategy do this thru some set combination of 1-4 moves with thru sparring combos or step sparring. Use whatever number of such combinations might be appropriate for whatever rank. This can accomplish things. Allow to to keep form set you don't despise in order to facilitate portability of your system, and allow students to use forms which can provide various levels of understanding of principles. applications, and strategies as they progress ' "Wax On Wax Off"
I take it one step further than that. Have expectations of what students will learn, and then allow the instructors to create scenarios to teach those techniques and concepts.
I've used this example in the past, but let's take hand grab defenses. I may have 4 different joint locks from 4 different positions. Two wrist locks (V lock and Z lock), an elbow lock, and a Figure-4 lock. From a cross grab, straight grab, two-on-one, and double straight grab.
In a comprehensive system, this may become 16 different techniques, where #1 is V lock from straight grab, #2 is V lock from cross grab, and so on. This gets to be a lot to remember. Especially if you add another lock and another grab, that 2 new things becomes 9 new techniques (because you go up from 16 to 25). Or if you start adding in transitions between techniques and variations of techniques, this comprehensive list grows exponentially.
Another system may have 4 techniques: Figure-4 from straight grab, V-lock from cross grab, elbow lock from two-on-one, and Z-lock from double straight grab. While this much more succinctly teaches the 4 joint locks and the 4 positions, it doesn't teach you how to apply different techniques in different situations.
The way I would approach it is that instructors know the 4 techniques and the 4 positions. Each class, they pick one of those 8 elements to be the focus. For
that day, it may be V-Locks from all 4 grabs. Or it may be all 4 joint locks from a cross grab. Or it may be the difference between a cross grab and a two-on-one grab for one or two techniques. Or difference between a cross grab and a straight grab. Or how to transition from Z lock to elbow lock to Figure-4.
In this way, almost every new thing I teach is one new thing for my students to learn exponentially more. If I teach a transition from one move to another, that can help them see how to transition between others. But if it's just memorizing everything, then everything new I teach becomes exponentially more that's required on the test.
I do want to have forms and some level of rote memorization. But I feel that beyond forms it's much better to teach techniques and concepts in different ways that compliment each other. This way we have linear teaching with exponential growth, instead of exponential teaching with linear growth.