Request to have CSS and XPath support added to all browser spying mode, so that element identification (or highlighting) can be achieved using any complex CSS or XPath selector.
CSS is widely used in web development and is often the way how modern websites use to implement many UI features via JavaScript. Often a web element can be identified uniquely by the use of a single expression without the use of any other attributes. It can be a much faster way in narrowing down to an element on a very large web page with thousands of elements. It may also bring benefits to pages that are dynamic in nature, e.g. an element may not always appear in the same PATH hierarchy.
I am aware that a user may specify XPath expressions against "Web Path" attribute when using Google Chrome and Firefox plugins. XPath however is not being supported by the IE mode.