[pcthrowaway]

From their docs:

Why? Stable subdomains and SSO are two things too expensive.

Why not just pick one from the Awesome Tunneling? Think broader. Not everyone is a dev who knows about server operations. For people working as community managers, sales, and PMs, booting up something locally could already be a stretch and requiring them to understand how to set up and fix server problems is a waste of team's productivity.

Copy, paste, and run is the best UX for everyone.