Allow testing login via JBTool
Include events to notify when logins are failing, captcha'd, unclear, or successful.
Allow debugging queue messaging.
Recognize eBay's new login form.
Try not to spam null pointer exceptions.
Report failure reasons to the end user when logins fail.
Detect the 'Fix Your Password' interstitial, and let the user know.
Try to avoid creating a storm of dialogs over time as login attempts fail.  Tray notifications may still stack up.