An update over here would be:
Migrating Redmine and OTRS to a Nethserver (from Turnkey) in order to be able to keep up with updates.
Migrating a Windows SBS relic to Nethserver + SOGo
Migrating the IIS webserver to a Nethserver with Typo3
Migrated our FTP to an FTPES on Nethserver using systemusers from the Samba AD backend
Installed a Nethserver as a Firebird database server to host 30+ databases that are accessed for support and development.
All this on a TrueNAS Z20 for storage backend, and a Proxmox hypervisor using NFS over fiber and virtio where applicable.
I work at a relative small software company with some enterprise needs. Great fun, would not be able to it as efficient without Nethserver, and there is no way that I would have achieved matching performance on MS and HP products, given my budget. Same demands are met, just needs experienced sysadmins to be maintainable, tho Nethserver eliminates that need for the basic tasks, so a tiered model can be used.
Oh, and trying to find a way to support you guys properly is on my list as well.