I'm a pastor and doctoral student who uses Logos regularly. I absolutely love it and count on all the great features Logos provides. Thank you for your creativity and hard work.
One omission in the Logos universe is a robust Windows Phone app. I know the user base is smaller than Android and iOS. But, it is growing quickly. And as a WP8 user, I can say that it is great. I don't see myself going to any other platform. WP8 takes the best of the others and wins the day, IMO.
The only problem is my favorite software maker (you) doesn't support it. It's heartbreaking to have to rely on a sub-par YouVersion app to read my daily bible on my phone. And before you suggest using the mobile Biblia.com site, it simply is not much better than a poor native app. There just isn't any feature-richness (prayer lists, reading plans, passage guide, word studies, etc) that would make it worthwhile to use.
I've tried tweeting you, voting on polls, and voicing my opinion other ways, but the answer is always either that there isn't a big enough user base (which major banks like USAA or apps like Mint or Instagram seem to disagree with) or that you're considering it someday.
With the recent reports that WP8 is the clear-cut third mobile OS all over the world (surpassing iOS in some regions!), and that WinRT and WP8 will soon merge into one OS, it seems like the time is perfect to offer a robust iOS/Android level app for WP8.
Please friends, consider the smaller but growing population all over the world who have found that Microsoft has nailed it when it comes to a great mobile experience. Give us an app, too.