Report on Cases and Activities
If I can perform a straight forward query in search with regard to finding an “activity type’ within a specified ‘case type’  would it not be a significant progression for the CRM to be able to perform this as a report.

As an implementor I finally got around the problem using smart groups, but ..  seeing as the table join is already part of the ‘extended report’ functionality would it not be a massive progression for Civi report to offer this in a more direct way.

Many thanks to the suggestions to make a view and incorporate as a block, I can do this, I appreciate the power of the views module, should it be necessary.  The push to make civiCRM a software capable of case management  and it being really useful to organisations who wish to manage actual case requirements means that a fairly simple code change could offer significant Implementor level advancement.  

I really don’t want to try and remember how to code, yours in eternal laziness x