"You should set your hostname to be your FQDN, uppercased."

Never had an issue with this.

"name: initialize Kerberos ticket"

What's the use case for this Ansible task. Never had a need to manually generate tickets.

edit: didn't read it through; this is part of their automation pipeline

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We manage 1000+ Windows Servers with Ansible and it's been as simple as Linux SSH. Multiple SOCKS5 proxies to different AD forests, WinRM double hop works great when become:true, GPO works just fine on Linux, initial setup is very simple with realmd. Biggest manual task is setting up the service accounts for Ansible.