...in the manner of Milkovic's "pendulum with a lever".
As we know,a trampoline is a frame with a springy material on which people jump up and down.
Milkovic ,has the revelation to make use of best spring "effort" and the most reliable support : gravity.
Milkovic's arrangement plays something alike,as a bouncing ball motion,or as an elastic pendulum with a free fulcrum,that manifests the properties of a nonlinear system.
For some nonlinear systems,a small input (change of a parameter) ,can lead to a powerful change of the output...
This behaviour,can be provocative for us,if we manage to fix,control and impose our conditions,requirements for a potential nonlinear system.
In any case,the domain of the nonlinear systems,for the moment,can be the only "playing field",confirmed by the science,where we can hope to get a good score :output>input...
My direct proposal is this:take your design,model and test it in a Milkovic's style(replace pendulum with your mechanism).
All the Bests! / Alex