Something that I am currently working on is looking into the usage of our "Help" options. I have always used funnels - one of my favorite features of Heap, but I have been playing around with the new Effort Analysis option. It is interesting to evaluate the number of interactions between users entering the "Help" option screen, vs them getting to what they wanted to see.
As we are in the process of changing that screen, this will be useful in figuring out what needs to be more prioritized.
What application interactions are others comparing?