Implement a Tor controller as a browser extension
The end goal would be to port Vidalia as a browser extension removing the need for a separate set of software and interface for controlling and viewing how tor operates. An alternate to this is to simply start from zero and build a tor controller which is minimal, provides the necessary information and control to the user, and loads within the browser construct/sandbox/application space.
Research topics will include how to secure the controller from attacks in other parts of the browser and the pages rendered by the browser itself. Providing APIs or interfaces for other extensions to influence, control, or augment this tor controller are further areas of exploration.
This is a difficult problem and implementation may involve new technologies that do not exist in browsers today.