Dr.Acrobat (no adobe), I know what you want, but really a type 2 hypervisor that runs on top of a normal OS is what you want. ESXi is a type 1 hypervisor and because those are used in datacenters, they are designed to do as little as possible. There is no cosmic rule against this though. You can write a type 1.5 hypervisor that installs on bare-metal but also displays VM output and switches between VMs and has full management built-it, but that would take a long time to write and no one will buy it because it contains the worst of type 1 and 2 hypervisors.
-gns