In this point we need to think about why a Full Motion Sim, used by real Companys like Lufthansa costs a few millions of Dollars. Instead a Certificated CRM Trainer ( Real Optics, all Equipment simulated but without Movement) is available for much less monney.
Whatever.... The biggest problem in this case are the physics. Professional AddOns give us nearly complete Data for everything. In Theory the Electrical Monitor can show a change of Voltage if you just activate the Backlight of overhead Panel cause this LED Light will need power..... And also a AddOn can calculate Fuelflows like real Aircrafts if they got a good formula.... BUT the "Physics" are limmited to the Simulated World.
And here P3D/FSX are verry Poor as i know. Xplane is a bit more realistic but also miles away from the reality ( Simply cause for fun Flights and instrument training its not needed )
Just a funny note..... Prior FS9 the world in Sim wos flat and not a ball..... It was not possible to overfly the Northpole
I will say "lets wait" .
MS FS2020 suprise us every week with new features we never think about in the past. The new Weather System is more complex like every Payware AddOn and as i heard also more complex as in Professional Company Sims today.
Same with many other features.
So hopefully.... Also the Physics like gravity, centrifugally and Gforces are more complex as ever known.... And finaly if those Raw Values exist in the Sim then they can be readout, too.
Summary.... I would wait a bit before you go this big step until FS2020 release.... Finaly the mechanics make only sense if you have raw data to show.