Singleness of purpose is vital to the survival of these programs. We can't be all things to all people.
Check out the history of AA. How the traditions came about etc.
They learned a lot from their predecessors like the Wahingtonians and Oxford group. Groups that faded out because they had their hands in too much.
"Shoemaker, stick to thy last!" comes to mind.
Best to do one thing really well than many things half heartedly.