I am a real-life SF50 owner/operator and CFI/ATP.
Are you sure you are referring to power? Engine power is shown as N1, and it should indeed be 100% or close to it at full throttle. However, the big number is thrust, not power, and thrust is dependent on altitude. At max altitude (31,000) feet, full power will only produce about 30% thrust of sea level. Likewise, being high up at Sedona will indeed mean full power only produces about 70% thrust.
Cabin pressure scheduling is entirely automatic in the Vision Jet and is driven by the flight plan. Oxygen is an entirely separate system from cabin pressurization. The only cabin pressurization controls are the bleed/fresh switch and the dump button.
The real Vision Jet does not have speed bugs for flap speeds. There is a VREF bug, but it is off by default, and no pilot would ever turn it on, because you are trained to reference green donut, not some static speed.
The autopilot cannot be activated below 400 feet. It should not automatically turn off though; that’s a bug. It should happily fly you into the ground if enabled.
There are situations where the Perspective will not automatically switch you from purple to green needles. In those cases, an annunciation “Switch nav mode” (or something like that) will appear.