The problem with this is the "used properly" thing. As smarmy as some of the contestants have been, they would use it for a sex room, either with someone or "alone".
Also it would almost instantly become a strategy room. Nomatter if production forbid these things, the HG's would still use it for whenever they wanted any types of privacy.
That's the point of the show. People who are on camera all the time & are being watched all the time, & how they adapt to it & each other.
Somehow all the creeps we've been subjected to over the years have taken the focus away from what it's supposed to be.