Clive, I spend the entire night doing various things and have to do more yet. . .I am going to read your post carefully later today as at this moment my brain is on fire again . . .but I want to give you this link about my development of the Exponential Multiplier for Vortex. I searched the website and found it, along with a discussion with Con Carlson on it.
It appears that in fact I had exactly modeled a trade size calculator into the Vortex program(Excel)with an exponential function to concentrate the buys towards the bottom of the trading range as well as sells towards the top of the trading range, in principle this would combine the AIM technique for trading relatively small amounts close to the middle of the extremes and also a Delay Technique (a sort MACRO-effect) for not selling too quickly as prices rise an not buying too quickly as they drop.
I was amazed to read what I had done in those days. . .the only difference with the specific d'Alembert refinement is that when the price trend switches upwards from under the middle point, the Sell size is close zero as the Exponential Sell-function approaches zero at negative infinity and only starts to give substantial sells close to the upper trading range. . this way, with the selection of shapes of the exponential curves one could create any buy and sell behavior that is desired. Its a shame I dropped further refinement of that method. On the downside my EXP-function mimics quite well the progressive Buy tactic suggested by d'Alembert. The exact progression to be used is then simply a matter of choice.
Perhaps I will take on the challenge again to develop it further so third parties can use it easily.