Interesting...

I use open office suites since Sun released one so it's quarter of century now ? Possibly I use it in less then average user mode :)

But:

- why you want your own mail server ? Certainly, email aka SMTP corporate server should be unavailable for [all?] suits.

- scheduling ? Do it really need to be done from Word or Excel and not from... some scheduling app ??

- what you mean by device management ? Sharing stuff among laptops, workstations, projectors ? Such thing, theoretically, belong to office but do not realy belong to documents editors package, it's operating system job. Or some not yet invented app, but for sure not a job for editors package

- Teams ?

- what else is needed for serious enterprise experience ?

But, sure, open office suites are just Office 95 clones, not enterprise packages. Now available via Web interface... Hackers approve.

And LibreOffice is quite ugly and somehow have feel like web page with bad response time. Tables editing is a lot nicer in Emacs/Org mode with Latex export.