I would like to see support for a3y17lte as well.
Since there is LineageOS support I think it should be possible There is an unofficial LineageOS ROM here https://forum.xda-developers.com/samsung-a-series-2017/development/rom-lineageos-16-0-t3883495 so there might be hope.
There are two other threads asking for support:
Should these threads be marked as duplicate and closed accordingly?