[at]Chef : My recommendation for linking the proposed cycle operating points to reality, is that a purely academic review (dead easy to perform) will presume certain parameters to remain constant, whereas, in reality they move as the SH 'raiser/lowerer' will affect the rest of the system. No single variable remains locked as SH is altered, in reality.

Presuming parameters to remain constant, when in fact they change, may (will) lead to incorrect final conclusions.

This was the reasoning behind my suggestions. No problem if this is ignored - feel free - it is your thread, after all. But, don't complain when the final 'comparisons' turn out to be implausible, in practice.