Also, from my limited experience with a single OLED screen, it seems that most stuff was created for a certain kind of screen without as much colour fidelity, and now that stuff seems far more...obnoxiously "saturated"?...on an OLED screen.
This has gotten much, much better, especially with "tandem OLED" where you just stack two of 'em on top of each other. It should be fine these days.
> Also, from my limited experience with a single OLED screen, it seems that most stuff was created for a certain kind of screen without as much colour fidelity, and now that stuff seems far more...obnoxiously "saturated"?...on an OLED screen.
That's up to the display manufacturer to calibrate the screen. The content should just be what it is and specify its colorspace properly. (Note, "properly" depends on the environment around you, so if you really care about this you have to participate too.)
When a display is actually able to put out the colours it then looks gaudily oversaturated. I've had such problems already with non-OLED "somewhat† calibrated" good quality screens as well.
† I mean I did not calibrate them, they were factory calibrated with a good enough test curve slip in the package.
Pixel aperture ratio has increased drastically since the early displays. This drops current density for a given amount of light output, and there's a nonlinear relationship between current density and segregation so that helps a ton.
Deuterium helps make more light per unit current, improves current density, improves lifetime.
Microlensing of your customers will accept narrower viewing angle, improves brightness and lifetime in the same way.