Data Dad - thank you very much for your comments, they are much appreciated. In answer to your questions....
Most of the LCEs at my unit have spent less time using CSD than the people they're supposed to be monitoring - we're talking operational hours in the single figures. Indeed a few LCEs are yet to complete their training - some have expressed their own concerns about the "training" system and CSD itself.
As for a safety case or hazard analysis, questions at my unit have been met with the same stony response as chevvron's - we assume that the safety case for electronic flight progress strips is being used. This is ridiculous, as the strips we're using haven't changed, so the new system looks both reassuringly familiar and terrifyingly different! People are beginning to take positive action though, so hopefully all is not lost....