My camera would be an expensive monstrosity.
Instead of passive lowpass filter, it would have this:
https://youtu.be/Y5Kozur2tf8?t=17A physical lever somewhere on the camera to adjust for the level of moire compensation. So I get a camera both with and without lowpass filter.
Instead of mechanical shutter, if would have this:
https://youtu.be/A9muBcF_QPw?t=166Redesigned so the filter can go pitch black and act as a global shutter, but also still act as an electronic variable ND filter.
This filter will be made more robust so it will also act like a barrier against dust.
It would also have a built-in master unit to control all 3rd party Flashes.
It would have an a.i. system to analyse the EVF feed and recognize Fibonacci patterns and other geometrical pleasantries and then draw them on-screen so I get an easy clue and can compose the camera properly.
It would also have IBIS, with Z-axis adjustments, so the camera can move the sensor back and forth.
This will turn any lens into a lens with Macro capabilities.
It would also enable Autofocus for old manual lenses, simply by shifting the sensor.
Expensive camera will be expensive.