OP here :)
For those who wanted more clarity on what 'clean and pretty OS' means.
Customization for all of us on here who care/are willing to put in 5 seconds of effort.
For normal people, a one-click install that has an OS setup (users, apps to do the basics they all 'need' to do with their phone (otherwise they will not ever give up their terrible spyphones, even if it means just losing one of the things they've been accustomed to do) which we, as privacy and security advocates, would accept in a person we contact on our phones. That way, we the people who put in effort for security and privacy, can easily put something in the hands of our normal friends and family that they will accept. It should also look as nice and convenient and cute as Samsung's/Apples offerings, which is make or break for them, as much as that surprises us.
It doesn't have to be as good as ours, and it doesn't have to be the terrible security hole they're perfectly happy with. It just has to be something that we're satisfied they're using for now, as someone in our friends and family who we care about, and to increase security and privacy overall.