Mr. Grimm:
This is my favorite topic on this forum. I've participated in many arguments here and elsewhere over the last year. Let me try and paraphrase and summarize:
Kenpo is not lacking.
1) Those who have truly learned Kenpo concepts and principles can apply them in situations not specifically addressed by the standard Kenpo technique curriculum.
2) Those who train at the top Kenpo schools do indeed learn to apply these principles in a variety of situations.
3) Many of those who claim that Kenpo is lacking have not developed a deep understanding of the principles and concepts, did not receive the best instruction, have not thought through their material thoroughly, and/or do not train with enough intensity and variation.
4) The longer and deeper you delve into Kenpo, the better you will be able to apply it in any situation and fill in any perceived gaps.
Kenpo is lacking.
1) Kenpo does not have adequate ground work or grappling technique. Kenpo concepts and principles can be applied on the ground, but the techniques do not directly translate. Additional techniques and training time is necessary to fight successfully on the ground.
2) Kenpo training is not alive enough. Kenpoists spend too much time on Kata practice, doing static drills, and rehearsing pre-arranged techniques on cooperating partners.
3) Martial Arts have changed dramatically in the last 10 years. Kenpo has not changed dramatically and many schools still teach the same curriculum as they did 20 years ago.
I suggest you search the Kenpo General and EPAK forums and review some old threads...but I think I've captured the gist of it here.