When my children were 7 or 8 years old, I had them in Aikido, and the instructor, who has since deceased, taught my children basic gooseneck wrist locks, and throws or moves ustilizing the elementary wrist locks. My children have grown up without any ill effects on their wrists, elbows or shoulder joints.
This thread illustrates fears that people have for teching children effective Anger Releasing Aikido. Overcoming these exaggerated fears seems to be quite a challenge.
Well I guess that proves it then, You are obviously correct and all of the people here, with decades of experience teaching what you're suggesting are obviously wrong. You came here to ask for input and suggestions, everyone has suggested that you don't teach wristlocks to kids and that you get more experience. It seems to me that you don't want advice you want validation, and it also seems to me that you won't find it here.