Given some recent unpleasantness (T302047) along with past incidents (T257687), it would be nice to add some functionality to Special:Random and API:Random to reduce their efficacy in allowing certain actors a quick and easy means of finding random wiki pages. There are a number of ways this could be triggered (block activity, AF activity, a mediawiki GUI setting, etc.) and a number of ways Special:Random and API:Random could have their behavior adjusted (throttle, return a small subset of pages, noop, etc). Yes, this can be handled by writing ad-hoc code within PS.php, but it would be nice to facilitate a quicker response time that didn't involve a production deployment. And yes, there are other ways for an actor to generate a large list of random wiki pages, but the aforementioned methods are well-known and easy to use.