Drop shields temporarily

It would be useful to be able to temporarily drop shields on a per-site basis. By default, I block trackers, ads, and scripts. That’s my favorite feature of Brave. Too often, though, I’ll come across a site that does not display properly, so I drop the shields. All that is fine, but then that site remains on the whitelist even though I may not ever go there again. In those cases, I should just raise shields again before I close the tab, but I don’t always remember to do that. A useful feature would be something like “drop shields until tab closed”, or a setting that de-whitelist pages that you haven’t visited again in say 30 days.