First of all: I know this might be a fairly uncommon requirement... I did a patch that adds support for configuring PAM to use pam_mkhomedir with authconfig, it's useful at least in here so that you can install a basically standalone workstation, plug it into company network, login and it "just works" since it creates a local homedir for the user automatically. The question is a) are you interested at all in such functionality? b) if yes would you want to have it only as command line option or have the option in TUI+GUI also? (so far the patch only supports cli + tui and I guess the option is obscure enough it might not make sense to add it to the tui/gui tools at all) P.S. Didn't include the patch here yet as it needs cleaning up and I'd like to know whether to include the tui/gui part at all first.
*** Bug 102171 has been marked as a duplicate of this bug. ***
This is too specialized functionality which would complicate the authconfig UI unnecessarily. Authconfig should however try to preserve parts of the system-auth config if possible.
There have been quite a few occasions where it would have been usefull to have this so it make me question how specialised it is. Maybe if it was there, more people would have a use for it.