Sure, you’ve got most of your servers running Virtual now.  And you’ve got a couple of contexts on your Cisco ACE.  But how manageable and automatic is the provisioning?  Check out Cisco’s Vframe: 

Cisco VFrame DC offers a rich middleware platform to orchestrate the provisioning of VMware ESX Server in a quick, easy, consistent, and repeatable manner. Cisco VFrame DC will integrate with VMware VI3 to automate the provisioning of stateless, network-based ESX Server images onto a utility pool of Intel and AMD processor based servers.

Cisco VFrame Data Center manages the external dependencies VI3 does not address. It orchestrates the configuration of all the services downstream from the hypervisor