When you change e.g. a variable, function, or class name in the Code Edtor, show an indicator wether you want to refector that name. Like VS2005.
Refactoring is state of the art programming and is (should be) often done, so please make it easy and quick to use.
François Gaillard commented
How about using the Ctrl+Shift+E shortcut on the name you want to change?
If you do refactor often, it's worth memorizing.
@Markus, you don't need another squiggly line, just right-click on the name, select refactor and you have your menu for the less used commands...
It's not a popup. It's underline symbol at the and of the name. When you click on them, a context menu appears. Then you can select an action.
Mason Wheeler commented
Are you suggesting some sort of popup question *every time* you change an identifier name? I sure hope not...