There are 250 odd new features in Mac OS X Lion 10.7 along with those which existed from day one. Like in any OS many features are hidden which when unlocked can make Mac Lion more productive. To customize Mac Lion with the help terminal hacks requires some expertise but if you are looking forward to an app that can quickly enable and disable features then Deeper for Lion 10.7 is the one for you.
With Deeper (link) for Mac OS X Lion 10.7 you can enable and disable the hidden functions which on the app is categorised into General, Finder, Dock, QuickTime, Safari, Mail, iTunes, Login window, Spotlight and other features. Under each of these tab you can find many features associated with those app or service. Under ‘Dock’ you will find option to enable 3D mirror effect, change position of the dock, add animations, auto hide dock etc. Similarly under ‘Login’ tab you can choose a display picture along with option to change startup mode, display welcome message etc. Deeper is useful when you want to tweak Mac Lion without wasting time.