Green was chosen because it's to what the human eye is most sensitive. Look at Fuji's X-trans[0], and there are also RGBW arrays that prioritize dynamic range.
All in all, the BFA is "good enough" most of the times. For the use cases where it isn't, you're either:
* Budget constrained and can't really afford not using BFA
* Able to (pay for and) use either a color wheel in front of your sensor, or go with prism + triple sensor.
* Bite the bullet and go with a "strange" color array. You'll probably need to work on the software side for demosaicing to get proper support and fix eventual artifacts.
[0] even more green! 20/36 photosites are green, 8 red 8 blue
[1] with W being white, meaning no color filter or "panchromatic cell". In theory this helps on dim light conditions.
The requirements for sensors is different than displays. I guess I was asking why the non-rectangular displays didn't have more blue than green or red as that would improve perceived resolution more.
All in all, the BFA is "good enough" most of the times. For the use cases where it isn't, you're either:
* Budget constrained and can't really afford not using BFA
* Able to (pay for and) use either a color wheel in front of your sensor, or go with prism + triple sensor.
* Bite the bullet and go with a "strange" color array. You'll probably need to work on the software side for demosaicing to get proper support and fix eventual artifacts.
[0] even more green! 20/36 photosites are green, 8 red 8 blue
[1] with W being white, meaning no color filter or "panchromatic cell". In theory this helps on dim light conditions.