The system works and its called Microsoft Connect , who would of thought it :)

Following on from my previous blog post MicroSoft – Follow best practices, on the connect item , the followup stated that changes had been made in 2008.  I genuinely thought that a change would take an age to trickle through to the customer. But after firing up 2008R2 RTM and examining the SqlAgent traffic with profiler , where before i would see non-parameterized sql, I now see RPC calls.

Excellent , i get my cache back.