Great product for critical production server virtual infrastructure. No any "gamers" in this area. Latest product can help more than previous. VMware Replication, vSphere Data Protection based on AVAMAR technology, new vCPU architecture and more new features says us that it is the one biggest product.
Room for Improvement:
Costs is very expensive. But some cutting features like Vcenter Operations Manager Fundamentls are available in starting versions of vCenter. It is good way for the best marketing from VMware. But Enterprise or higher versions are very expensive.
Now I lead the Upgrade to vSphere 5.1 project in my Company. SSO installation are strange... need to involve DBA in this process. Scripts are not good... This installation must be re-produced. But new features are very great and interesting.