Hi Don and Ludek,
Well, we can't write the above code in installer dll, its a different component altogether.
Also we have integration with many third party tools which also uses crystal reports, so we don't have any control on their versions of crystal reports.
Till now we have been doing the MSM integration with our setup, we found it easy to integrate, hence we were hoping for the same support will continue from SAP team for providing MSM.
Anyways we are also trying for integration of MSI in our setup, but setup team is not very happy with it.
They have to take many extra efforts for integration of the MSI.