Unless the ethos of the site were changed, you'd have to have any features limited to gold members limited because they're computationally expensive, and not ju

Unless the ethos of the site were changed, you'd have to have any features limited to gold members limited because they're computationally expensive, and not just to encourage payment -- the way reddit lets gold members have different sort orders on eir profiles, or view more comments in one page. Arbitrarily picking (i.e. "you can't see dead comments unless you're gold") would make the site worse.