If the threshold was 17/20... nope, 16 couldn't vote out 4 ever.

I mean that all the people who stake the governance token can vote out any rogue validators.

I didn't mean to devalue what you have created, sorry if it sounded like that. If it works with a sufficient level of robustness against the various kinds of attacks, and does what is needed for the SPK network, then that would be a terrific innovation you have created.