Perhaps GM match for a short time to see the response.
Having Leela (running on CPU) that anyone could play against would require 100x as much server resources as we currently have.
So other than putting Lichess "out of business", it's a great idea!
don't touch the pet
here is leela for those interested
http://play.lczero.org/Maybe it's possible to make LeelaZero on Lichess with WASM/PNACL technology? So those who want to play it with Lichess interface would not spend Lichess's CPU power?