For small ISPs it would be awesome if Cloudflare had a solution where we can host a 1.1.1.1 DNS resolver on our local network. We (the ISP) could donate the hardware/power/colo and Cloudflare would just need to operate the software.
This solution would be for ISPs that are unable to peer with Cloudflare or have traffic levels too low for Cloudflare to be able to justify setting up a cache server.