Project: Title is a plugin for KOReader that a friend and I made from the existing Cover Browser plugin. It started by adding in a progress bar that's based on the length (page count) of the book and grew from there.
It has a more compact header with buttons for several commonly used features, a footer with compressed page controls and optional status widgets, and (in our opinion) Cover List and Cover Grid displays that are as good as any on a commercial eReader but with all the flexibility you expect from KOReader.
Here's a link to the github repo:
https://github.com/joshuacant/ProjectTitle where you can find downloads under "Releases" and the instructions for installation and use.
In the time since I originally posted this thread we've fixed a lot of bugs, added many new features, and support 10 languages other than English. (If you'd like your language added and can translate from English, please help!)
Anyway, let us know what you think. Unless you hate it, in which case you don't have to share that with us.
If you run into any bugs, please consider opening an issue on the github page so we can fix them. We're not experts and had never programmed Lua before, so things may not be perfect.