Enable adding TV episodes (not just seasons) to lists
One of the things the disastrous Trakt v3 upgrade killed was the ability to add individual TV show episodes to lists. I used that feature extensively and losing it was one of the last straws that caused me to fire them.
This is useful in a lot of different scenarios, like for listing actor/actress appearances in filmography lists.
One of my favorite applications was curating lists of holiday-themed episodes (like Christmas, Thanksgiving and Halloween episodes) I could refer back to each year when I'm in the mood to watch something season-appropriate. Everybody has Christmas music playlists and many have Christmas movie playlists, but finding Christmas episode playlists for TV shows is not common.
Loving Simkl thus far and hope you'll agree this would be a useful feature.