More usability offline (keep saved songs in the database to add when needed)
Our church meeting place has no wi-fi (crazy, I know) and so we prepare everything before we get there. If we were to want to add a song last minute, though, we can't even add a song that was cached in "My Songs" without an internet connection.
I really hope in future versions, we'll be able to access songs that are saved locally to help with locations like ours or also times when you might go on a retreat to somewhere with spotty internet.
Charles Philip commented
I Agree that songs should be store in a local cache as well, and I have experienced a case where we typed out a new song that someone wrote, and a few months later when we wanted to sing it again, we couldn't find it. And we were in fact connected to the internet. So this may be a different issue, but it will be resolved if songs are stored locally.