Some time ago, I wrote a small tool that serves as GACutil replacement. Now I had time (during christmas holiday 
) to put it online. I’ve called it CmdHelper, because I want to extend it over time with more useful functions without always creating new programs (DRY).
CmdHelper installs Assemblies in the GAC along with their PDB files. This is a big advantage compared to gacutil, because it allows to display line numbers for assemblies in the GAC when generating a stack trace. This makes debugging much easier.
Further it can remove Assemblies from the GAC by specifying a specific filter criteria. For example, you can remove all assemblies of a specific vendor. Or all assemblies that start with a certain string.