I ran into an issue when doing a leapp upgrade from RHEL 8.10 to 9.7.  The host in question is primarily acting as a hypervisor for a number of qemu virtual machines.  Mix of RHEL from 6 through 9, plus a couple of Fedora instances.

After upgrade was complete, most could not be started due to the Spice/QXL deprecation.  Easily fixed through Web Console but a warning would have been good.

A subset of the VMs also had CPU issues that prevented starting.  While it would great if that specific instance could be called out, if we at least were able to check for the existence of virtual machines (eg: check the output of "virsh list --all") and give the user an Info block stating something along the lines of "There may be issues with starting any virtual machines hosted on this server after the upgrade" that would at least be a help.