While refactoring projects I’d like to get a list or graph of unused methods.  This is not only for tidying or big-rewrites but also for whenever one updates a method.  Every time this happens I’d like a ping that x less or y more methods are used.

Combine this with profiled unit tests and one could get the time&resource impact of a rewrite very fast.

First step is to create something that find dud methods/properties/classes/etc.

Second step is to make it awesomelly useful.

This idea is probably already created somewhere.  Anyone who knows?