When analyzing data about our sales pipeline's performance, it would be really helpful to know how far each prospect got along the pipeline before the opportunity was marked as lost. Which ones never responded to my cold call or response to RFP? Which ones responded initially but didn't go beyond that? Which ones did we take all the way to proposal before losing the sale?

Perhaps whenever an Opportunity is set to Closed Lost, a field called "Last Status" could auto-populate with the status we changed it FROM. Then, when we export the data to review it, we'll have a field letting us know how far each client got in the pipeline, as this can reveal trends and issues to be addressed.