This aligns with a thought I had to make part of an Upper House like "jury service" - ie, draft people in as a "Civic Duty". Perhaps not for two years - I was thinking a few months at most so that (1) there is a good turnover so current opinions are represented (2) such members don't "go native" as it were and (3) any "nutjobs" who make it past any (essential) vetting can't do too much damage.