Firts, to address the remark of Jon, perhaps 'True Mastership' could replace 'professional'. In my view this covers both professional as personal growth.

Second, to enhance learning I suggest using the approach of appreciative inquiry. This approach can be used on individual level, team level and organizational level. Also, it fits the attitude of trust instead of distrust. And it can be used on both sides of the model, the formal and informal organization. As such it encourages a more integrated culture between the formal and informal organization.