Supplier - Client Metrics

I responded to a posting on ere.net concerning supplier metrics.  A vendor manager, at a client company, was wanting help deciding on what metrics to use for judging their supplier vendors. 

What caught my eye was a response comment about the impact client companies have themselves on their vendor's performance.  Things like response time from resume submittal, interviews and offers have a huge impact on vendor performance.  It can deflate recruiter's and sales folks trust and support for working certain client's requirements.  It can turn candidates against vendor companies if they feel they are being strung along. 

I see a really good and successful metrics performance plan as a two way street.  Vendors should have input into client company's performance.  A lot of clients would balk at this notion but make the suggestion to your best clients and convince them it really will help them too.