Some days ago I started a new theme for my Pocketbook 622. It's not 100% ready but already useable.
1. One of the themes (RS-Theme-0) deactivates the lock-screen and shows the last active screen instead and shows only a little key on the upper right.
2. In reading mode the panel shows time and progress bar. And fbReader also the title.
Here you can find it:
Greetings fron germany