The new feature that lets you add a background image to Google's homepage has a name reminiscent of Microsoft: "classic plus". When you click on the link to iGoogle, there's an option to switch to the classic homepage. Now the classic homepage has an important feature that was only available in iGoogle: themes.
It will be interesting to see if Google adds more features from iGoogle to the "classic plus" homepage. Google could add some simplified gadgets that show if you have new messages in your Gmail inbox, new events in your Google Calendar agenda, gadgets for weather and news. Since Google only shows the search box and the two search buttons if you don't move your mouse, the gadgets wouldn't clutter the homepage.