Nonaka’s SECI and Ba are two of the most widely cited KM models which makes it difficult to search for specific interests. Hence, I would like to ask for hints and sources of suggested modifications (not on a ‘big’ scale like Boisot’s I-Space or the Nakamori ‘seven-waterfall’ Model), but ‘sustaining’ changes as in the number of Bas or their connections. Examples, I am aware of, are the ‘vocation ba’(Kaiser & Fordinal 2010), the ‘futurising and imagination ba’ (Uotila & Melkas 2008), and the Framework for emerging Collective Self-transcending Knowledge (Feldhusen 2014). Thanks for your assistance. Ulli