You can use samsung cam for that night pics and gcam for the rest of circunstances that dont need flash.So all that is useless as if you want to use a aosp rom we need a cam port with led flashlight working. Otherwise these roms are useless because of lack a good cam...
I used for now a pixel drimmed Samsung rom with Samsung cam that open the Google photos app instead of Samsung album.
I don't need most features that are ported...I need a cam which can also do a good shot at night if I want to use a Google pixel like rom..
I'm think about to change to pixel 3 as it can now charge wireless ..one of the things why I bought a Samsung s9
Pixel 3 is nice for photography, but with the s9 or next s10 you can have the best of both.
Galaxy sx smartphones are more packed in features. I think Pixels ones need more time to get at the same place than Samsung ones.