show core limit earlier
I created a lab template size "Large, nested virtualization" and from that derived 8 student machines.
Everything looked to, 8 VMs were created - all of the same size 32GB and 8 cores.
Then I started one monday my course - and to my surprise got the message, that my core limit is exceeded - and that only 3 VMs can be started.
That message came far too late - it would be better to show a warning already during creating of the lab VMs. Like "you might get into trouble, cause you might not be able to start all these VMs..."