Interest for another 'Bletchley Circle' Series'?

I have only just watched the whole of 'Bletchley Circle' (Including Special Features) on DVD.

I believe this Drama Series still has 'Legs' but how to renew interest for another Series or more? The Covert and successful CV that these ladies (who gained their collective skills during War time service at Bletchley Park) have built should be put to good use. The last case involved directly recruiting Lucy's male Detective Sergeant friend in Scotland Yard and indirectly involving his 'DCI' Boss (who would have gained a lot of Credit from the outcome). A 100% success rate of Case solving might well see a new unit set up with Home Office approval with the Ladies given full access to Police Data Files. A 1960'S female version of 'UCOS'(if you will) assisting the Police using their Analytical Skills to Crack 'Unsolved Crimes and Ongoing Cases' with the new series set in the 1960's. The Ladies would be middle aged by then and probably ready for another collective challenge again but this time with the support of the Police instead of having to do it all on their own. Oh... and bring back 'Susan'.


I wonder if the Real Bletchley Park Ladies would have welcomed such an opportunity as this in the 1960's?