Now that the directory server is starting to trickle out, I'd love to see that incorporated with some form of administration tool. I've done a bunch of LDAP setups in recent months and can now finally manage it from command line/LDIFs but it really doesn't have to be that tough to get a simple directory setup. The great part about it is that once it's setup, it can do quite a bit and even act as an Active Directory domain controller which is really a beautiful thing.