This is a plug for the templated package generation command line client produced by @jsick and announced here.
I was a reviewer for it, but I recently was able to use the CLI to generate a package in real life, as it were. I must say, it was fantastic. Having created packages in the past, I can say the new system makes creating them an absolute joy. You won’t want to stop making packages.
In summary, if you are not using templatekit you really should give it a try.