Have any of the hearing parents stopped to consider that what is available today is still based on the principles of the past. The same theory is used, only the techniques have changed. Just like MCEs grew out of the theory of English first, and have largely been ineffective because the technique is based on a theory that has been proven ineffective over time and years of research, anything today that the technique appears to be new but is based on the same outworn and disproven theory of langauge acquisition and language learning for the deaf child is destined to less than effective. Use what research has shown us. Research indicates, even the newest research using kids who have CIs, that kids who are most fluent in language are those that are bilingual. Why? Because ASL addresses the perceptive and cognitive needs of the deaf child who is learning. A child cannot learn if their perceptive and cognitive needs are not fully met. Spoken language does not, and never will, fully address the perceptive and cognitive needs of a deaf child. No matter how well amplified and assisted they are, they still need the visual input to make that learning possible.
All of these methods, past and present, fail to address the basic cognitive functions of the deaf child's brain. Until that is considered, there will be no method that works with efficacy.