Prof. Keen provided many reasons to be confident in looking at alternatives to neoclassical. The key takeaways are that money should not be seen as a commodity, private debt creation should be within limits and focused on asset creation, government shall put money in productive capacity, limit imports to the limit of exports or thereabout rather than borrowing in foreign exchange and limiting financial sector share in GDP to allow more share in pie to the workers and firms.
There is considerable debate in Islamic economics literature on what shall be the correct response and attitude towards mainstream economics methodology. There are three varied responses among Islamic economists regarding the issue. The first response is to use the methodology of mainstream economics in Islamic economics as is. The second response is to modify it according to the needs and the context of Islamic framework. The third response is to discard it altogether and devise a new methodological framework from scratch.
Islamic Economics Project 