RFC: New derived field definitions

[Joel Peshkin]

I have been looking for ways to enable Bugzilla's standard query 
mechanism to identify bugs that have not progressed.  This would be the 
basis for queries run by managers to identify where they need to 
intervene and for future enhanced whining reports.

The ones I can think of are.....

"days since last reassigned"
"days since (commented on or status updated) by assignee"
etc....

It seems that there must be a way to do this in a general case without 
excessively clutterng the UI.  Unfortunately, that way is not jumping 
out at me.  

Ideas?  Comments?

-Joel