I will enjoy Vyrso as soon as it has one feature every other e-reader has: the ability to "archive" titles from my library, keeping only books I'm currently reading on the list. I have a LOT of logos books, and I hate having to scroll through every single one to find "My Utmost for His Highest" or something I'm actually interested in reading. Having to wade through every volume of a commentary, every pre-20th century freebie, and every other title included in my base package is just not user-friendly.
Of course, I think the same function should be in the regular Logos app as well. If it's there, I haven't found it.