After my recent experience with upgrading Identity Broker there are a couple of nice-to-haves in the installer that would make things easier. In both cases either a warning or a log would be helpful. Admittedly, both problems could be solved by stringent documentation however the scattered nature of documentation on sharepoint and having to find one line mentions in a host of project documentation is a challenge for professional services I believe so some checks and balances in the installer itself would alleviate the problem.
1. A notification that there are non-standard assembly redirects in the unify.service.connect.exe.config and which ones are non standard. (The only way to know now is through trial-and-error or rely on documentation.)
2. A notification of all .dlls that are found that are patches from previous installs. (the only way to find now is to uninstall rendering in place upgrade risky or relying on documentation.) This one is relevant to both UNIFYBroker and UNIFYNow.
Customer support service by UserEcho