With thorough ASHA oversight in development and implementation, and an associate's or bachelors in speech or communication disorders for the SLPA's, I see many benefits to this proposal -- as long as the supervising SLP retains primary interaction (perhaps 60-75%) with clients.  It is a need long recognized with caseloads of 65, and though there will be growing pains, they will be addressed. However, once the dust has settled, I believe that the benefits will outweigh the difficulties.