You have Enterprise Manager in your infra? What would you add or take out of? how much use is it giving you?

In VBR v11 v11 there are several improvements on User Interface –Console And Enterprise Manager 

But are you using all the features that Enterprise Manager has?

One of them In v11 there will SAML For vSphere Self-Service Portal

•Added support for SAML accounts (e.g. at service providers)

•External users and groups

•Group quotas have usual behavior

•Delegation mode: vSphere tags