For years I've seen companies that produce BI products make the claim that users will be able to create complex reporting such as "as of", drill thru graphs, etc right out of the box. A constant I always see is that this is never the case. Report writing is a profession itself and it is something that requires experience to be good at. We have been a re-seller for several reporting tools that we package with our app and I've never once been worried about job security due to any reporting tool.