For monitoring Lync we have a solid MP with strong capabilities. We have capability to monitor core components and by using Lync watcher nodes we can simulate user experience. One key piece of information I found missing in the MP is the number of users connected to front ends server at given point in time. Most customers uses such counters to measure how the service being consumed, which different endpoints being used etc.
Lync stores the user information in RTCDYN database of Lync in frontend servers.There are various scripts/queries to collect this information. Here I’ve used the script sample from Pat Richard ( http://www.ehloworld.com/269) and converted it to feed data to Operations Manager using property bags .
After you start collecting this from Front End servers then you can visualize it using Performance Widget, Object Detail Widget or in a performance report.
Update ( 26/07/2015):
I have fixed the wrong folder references and uploaded the MP again.