I am a big fan of coaching and resource based Program and Project Management Offices who also provide consultative Quality Assurance  services on programs. Project management is such a great discipline and complimented well by Change Management. Mix that with the Business Analysis function and you have a well rounded discipline that would serve any organisation well. So does your PMO currently have any Change expertise or include Business Analysis support?

Following are just some of the benefits of including Change functions in a PMO:

1) Prioritisation

If you have a PMO that isn't assessing the Program of work based on benefits and impact to stakeholders, to assist with advising on strategic prioritisation then its not offering the right level of support.

After all if you are prioritising based on simple ROI calculations but aren't discussing as a management team the timing of initiatives which ultimately impacts the resource used to deliver the projects as well as realised benefit...