1. User editable plugins (Similar to WinWasher and others)
2. Column size and sort saving
3. Option to empty recycle bin with the rest history (not a seperate button)
4. Better and user editable ignore list management
5. Ability to "always exclude" every registry invalid key user wants
6. Registry searching (something like the excellent regcrawler)
7. A nice looking auto update dialog

Thanks a lot