Guarantee Continuous conduction mode dc/dc buck converter
Here are a few observations: -


Most buck converters are voltage regulators so, if the load is fixed (3.5 ohms) the graphs plotting load current against duty cycle take you down a non-constant output voltage situation - this seems to restrict your ideas to very few applications (CC applications).
Having the load resistor fixed in value also restricts the application even more so I'm even less inclined to see the benefits of this approach.
A lot of modern buck regulators are now becoming synchronous and the excessive ripple seen in these types of converter (what would be previously due to DCM) is a thing of the past IMHO.


Maybe I've missed some intrinsic benefit about your process/approach?