Actually, what's really needed is support for Samsung's Dex and Huawei's Desktop mode over a wired connection, instead of a mirrored display. Both of these are productivity Android desktops that turn the phone into a laptop with an external screen connected. I was able to get my Home screen to stay in landscape mode, but it was still too big for most Google apps, some of which won't display correctly in landscape mode.
Actually, what's really needed is support for Samsung's Dex and Huawei's Desktop mode over a wired connection, instead of a mirrored display. Both of these are productivity Android desktops that turn the phone into a laptop with an external screen connected. I was able to get my Home screen to stay in landscape mode, but it was still too big for most Google apps, some of which won't display correctly in landscape mode.