If we can just have low-pass filtering work with the frequency graphing and be able to filter out the ignition "noise" that would be great.
To be honest, usually if I'm scoping a MAF it's to prove what I already suspect. So off-the-cuff I can't think of anything to add for testing of MAFs beyond what is stated in the pdf you've posted. I see no need to set up probes in an attempt to graph airflow.
Frequency, duty-cycle and pulse-width are all graphing strategies I think most of us would use if available, namely on pulse-trains as they are so difficult to monitor in their raw states...well at least I can't do it.
What I like about having the ability to do such tests is that it further expands the field my imagination can run around in.