Yes, Kerberos is a direct import, although extended quite a bit. AD is a lot more than Hesiod, but AFS is a lot more than SMB. Zephyr didn't make it over.
There was an opportunity to build out graphical management tools, but NIS+ kinda got in the way, and the politics of commercial Unix in general didn't help.
The nice thing with kerberos is that it v5 has extensibility effectively built in :)
I'd say the switch to DAP/LDAP was obvious better choice than Hesiod, and GPO essentially standardizes a lot of tooling that SIPB et al built for Athena as well