Just a thought from a sysadmin in the field. CIM related commandlets are going to become very popular soon with Microsoft deciding to deprecate SNMP and only support up to version v2c. With no SNMPv3 support, which is starting to be pushed by compliance organizations such as PCI DSS and the like, Microsoft's only alternative currently is this.

https://technet.microsoft.com/en-us/library/hh831568.aspx

SNMP

SNMP is deprecated. Instead, use the Common Information Model (CIM), which is supported by the WS-Management web services protocol and implemented as Windows Remote Management.

I believe you kind of touched on it if I'm remembering rightly from when I watched the powershell courses you had but perhaps it would be a good one to go back and do something as a standalone/add-on for that material? Yes, you could always just use Get-Help but this is a large and complex class of commandlets. Save for those of us with a ton of time (ha, does that even happen in the IT world?) diving into that is kind of complex. If nothing else at least a running start into CIM might be helpful for those like me that work in industries that require it.

I would like to echo the thoughts of many in this thread that a concise list of PowerShell commands to study for the exam would be very helpful. Even if you cannot teach a whole class on it, just a list of the commands across each of the 70-4xx courses would make it a lot easier to study for the exams.