Build.PL files installer
customise location, place value as default into a tiny generated stub - probably from mariachi.PL
Configuration
commandline/inifile kinda thing. I think this is probably what AppConfig is good for, and we're already using TT so it's worth a look
Internals documentation
as always. needs to cover subclassing, since we kinda support it, but I'm sure that we'll assimlate ideas rather than subclass in many instances
website/usage docs
an install guide. maybe some PRish bumf benchmarking it in comparison with mhonarc/pipermail. a logo. how to install with your existing mailman system. finished templates