Folder.qlgenerator shows pretty good file list for Quick Look.

Install

1. Drag Folder.qlgenerator into /Library/QuickLook/ or ~/Library/QuickLook/.
2. Create "QuickLook" folder if you can't find at /Library/.

How to use

After installed, hit space bar at Finder while selecting Folders.

Functions

At bottom of Quick Look window, you'll find 2 checkbox to show/hide hidden files and time-stamps.

Customize

Folder.qlgenerator shows list with using HTML and you can customize the style of view. You'll find HTML files at following path: Folder.qlgenerator/Contents/Resources/English(or Japanese).lproj

Please read variables in custom.txt.