I think both Darmok and The Inner Light from TNG would be solid candidates. Both are more about the story and dialogue than the setting, and while both have more sets than OP’s examples, there’s also plenty of room to consolidate and move scenes around. Almost all of the stuff on the planet in both episodes, for example, could be a single set with just a few pieces of furniture (or rocks) moving around to give the allusion of location changes.
They are also very good episodes that have a message beyond just the setting and plot, which make for a good play, as well.
Made the switch from Podcast Addict recently and I’m pretty happy. It’s much more stable (especially with casting) and I like the queue system, but I do wish I had a bit more flexibility in applying download/update rules to whole categories instead of only one show at a time.