On Mon, 29 Oct 2018, Michael Rogers wrote:
If anyone on the list knows whether/when we're likely to see a pluggable transport based on encrypted SNI I'd love to hear about it.
There was a thread on this topic recently: https://lists.torproject.org/pipermail/tor-dev/2018-September/013453.html
So it seems the first step is having major adoption by browsers and websites, before using it for anti-censorship. Otherwise censors could just block all encrypted SNI requests.