quickpkg with a few additions:
You can now add pre- and postinstall scripts or an entire folder of scripts.
--ownership parameter that will be passed straight through to
pkgbuild. Usually the default
recommended will be what you want, but it is there if you need it.
There is now a
--output parameter that gives you more control over the location and name of the resulting package.
And as a neat trick, you can easily create a droplet for
quickpkg with Automator by following the same instructions as for
munkiimport in this article.