It would be very helpful to have a bit more granularity and choices in the VMware monitors.  Specifically:

• Datastore Usage - Track disk use over time and alert on datastores that are reaching capacity
• Hardware Status - You are pulling the underlying metrics but not the red/green status that could be alerted upon
• ESX Memory - The metrics are pulled, there is even a button to set thresholds but no fields/thresholds to set in that screen
• VM CPU Metrics - You report CPU Ready as an ms value but when reading it at a VM level its value is as a % (kb.vmware.com/s/article/2002181) and I need to be able to alert on those metrics as well
• VM Disk Metrics - Does not currently include latency

Some GUI items as well.  For example, from within a vCenter monitor the list of VM's is clickable to take you to the VM object.  The same list of VM's in an ESX host object is not clickable.

ESX host name is present in the VM object inventory but not clickable