Being able to apply for roles was mentioned recently, and I think it could fit quite well here - individuals could send applications to the CRS who would then vet and select. (And if nobody applies or all are deemed insecure, then it defaults to CRS choosing their own again, I suppose.) I think this could help expand the pool of usual suspects, though of course there is the option that the CRS would just keep picking the usual EC members out of the applicants, and may need additional vetting during the election itself. Still. Could be interesting.