What you're signing up for
You'd get hands-on access to the game master tool before it opens up, and you'd be running actual sessions with it rather than clicking through a demo. Expect rough edges, things that break mid-session, and features that change under you between builds.
In exchange: founding-tester status and perks, and a standing line to the people writing the thing. When testers tell us a design decision is wrong, that has changed our minds before, and we'd rather hear it early and bluntly than politely and too late.
Experience level genuinely doesn't filter anyone out. A GM running their fourth session ever catches things a twenty-year veteran has long since learned to work around.