16:10 and 4:3 get penalized with less horizontal FOV, without gaining more vertical FOV.
Even 16:9 compared to 21:9.
The current HOR+ method penalizes less wide monitors without giving more vertical FOV to them as it should.
The developers will understand and they will bother reading.
See the link i posted above with images.
If you were to move from 1080p to 1200p you would end up with less horizontal FOV but NO extra vertical FOV, despite the fact that 16:10 is TALLER and should gain extra vertical FOV and lose horizontal FOV.