Tex, no bad ideas so far, I like judo for young people, 10 or younger, it teaches you to fall down first, like gymnastics, good holds and escapes, but no striking. For a full regimen, strikes do need to be part of the regimen. I am a fan of Aikido, but have not practiced it, I like it it in theory and observation. I studied judo and tae kwan doe, Korean style. My teacher ( sensai ) was a great guy who is a marine that learned his stuff in Korea, and his teaching, is recognized in Korea. Hard core teaching, but gentle teacher. Gave as much as he thought you could accept.
I think the temperament and goal of the teacher is more important than the curriculum as has as much been stated. As the child grows older, and more capable, then more techniques are capable. The older MA schools teach respect, honor, and mental preparation, far better than training a bully, as I experienced in Tae Kwan doe. The sensai would allow you to bullied to a point, just to find out how you were, but would step in HARD, if need be.
At the end of the day, MMa, not what we watch on TV, completes the process, it is what takes it to the final level, complete domination of your opponent. No mercy type of stuff. No one technique is perfect. But all the previous have brought them to this point, which is the best, awareness,, avoidance and god forbid, action. But capable.