I could not quite understand that, can you explain it better?
You would have to specify all the components of such a section, like maybe pump parameters, and convince someone to implement it.
I’m working on something similar, if it can even be done. It’s difficult to recommend default PIDs for any copter because the the size and weight distribution, component selection, battery and probably even wiring can all make quite a difference.
The “problem” with Ardupilot is it can operate so many different platforms and such a huge variety of components and combinations - that setup and tuning can be complex. Of course this is derived from necessity and demands by users and use-cases.