Ability to compare dimension values in segments

In Adobe Analytics Segments we can use "equals" and "does not equal" to compare a variable against specific values.

i.e. Page Name (evar1) does not equal “test”

This is fine when you only have a few specific values to compare against. It would also be useful be able to compare the values of dimensions as a whole.
 

The specific scenario that comes to mind is segmenting page views where Page Name and Previous Page name are not the same, but this could also work for a number of other scenarios.

I.e. a segment that says
Hit
Page Name (evar1) does not equal Previous Page Name (evar2)