I think it's a good idea. I have a podcast called 'Easy Like A Sunday Morn' (available on Spotify, Stitcher, Apple Podcasts, etc.) and at the end I have a code word that lets me know that people have listened all the way to the end.
In some circles it's a called a "Call To Action" and allows people to interact with your content, so it's a good idea. Initially, I started doing it as a way to see who would listen all the way through, then it became a fan favourite thing so I keep doing it every episode.
Thanks for the follow.
Ok great good to know! A call to action! I like that very much. Looking forward to getting to know your content :D