I don't use Server. Just interested in packages. So I integrate nearly all of them except Hyper-V etc. which I don't use..
If you choose another user, reboot, enter the normal system, use dism++, enter account management, enable Administrator, just fine.
I can do that without a tool. I mean offline modification for setup OOBE. Which package or Policy Definition?
Just add GUI to Acore, did not care about installing that component, also appeared in the system to select other users.
Ok, so I still have to "fight" packages myself... It would be faster if we were to share specific information.