I'd bet that as soon as a potential paid version leads to greater benefits than aesthetics, people will be up in arms against whatever treatment free users won'

I'd bet that as soon as a potential paid version leads to greater benefits than aesthetics, people will be up in arms against whatever treatment free users won't get. Facebook would poison their free tier and stale their remaining ad audience. ... and I wish I could see how this would work, because I hate ads so much I can't use the current Facebook app at all.