[CoolCold]

I'm honestly in much doubts here. To make it proper reply it must be lengthy, will try to highlight at least several points and keep it short.

* finding FreeBSD guys, who probably the best match here is somewhat puzzle on its own

* highly likely common approaches in modern world would fail - cloud-init, systemd units to be adopted, not even mentioning Docker/podman and highly likely monitoring/metrics tooling. Not checked, but very unsure NewRelic or Datadog are compatible => admins will not be able to use their previous skillset effectively

* convincing people to join team of supporting OpenBSD systems can be somewhat tricky. I'm basing on my own feelings here - I'd rise the bar for salary 2 times and even that will think twice on should I spend my time on such experience

* leaving performance alone, I bet it will require extra hardware planning instead of buying any Supermicro/HP/whatever server and be sure it's Redhat compatible. Must be very serious reasons to put yourself in chores of this sort. And reasonable admins must consider such risks and delays for rollouts of products in production

So on.