You can get a fair bit of benefit from using the boot.img like you say, but it will only go so far.
While I wouldn't recommend it, there are flashable ZIP images of microG, but it'd be at the downsides noted here: https://divestos.org/index.php?page=faq#rootSupport
You can get a fair bit of benefit from using the boot.img like you say, but it will only go so far.
While I wouldn't recommend it, there are flashable ZIP images of microG, but it'd be at the downsides noted here: https://divestos.org/index.php?page=faq#rootSupport