The solution is simple for me. Why not have both? Teach the best you can for the masses, tolerate it and search out the students with potential, invited those to intense training with other like minded students. That is what I do. They in turn set a great example for your regular students to follow.
This comes back to something I've said many times before, stand firm with in martial arts training philosophy and will reiterate here - people come to martial arts for a myriad of reasons. I like to see people try to stretch their limits, grow, do things they never saw themselves doing. I really like to see when people understand the science behind joint manipulation, pain compliance and the overall benefit to a full curriculum. If they can make use of the material to serve their purposes and I feel they've worked REALLY hard to reach a plateau where they understand the basics, have them memorized and available to their consciousness, can be responsible with the knowledge they have and have come out on the other side improved ... what is really wrong with that? Others come for personal enrichment. Others come for self-defense. Others come to find something they can take to competition. Others come to augment their physical training either for their amateur sport of interest or their profession.
Adaption for physical ability deficits (blindness, deafness, paralysis, neurotransmission, etcetera) would be in keeping with that philosophy, would it not?