What I like about him to this day. His thinking about LAND and his proposals to overthink the whole system. That was very good. I recommand you go this lane with Gesell but all his money talk is founded on a misunderstanding of the monetary system.
Back to Marx: My other critique is formulated by Marx. The means of productions are more important than the monetary system, although banks are VERY important and shouldn't be in private hands, in my opinion.