For example, clicking a link which loads some data, then clicking edit (which isn't even an anchor), typing in & clicking stuff, then clicking the save button (don't click the cancel button!) would not be an interaction that would get picked up with your suggestion. Detecting loops becomes much more ambiguous and backtracking to get all the permutations of interactions becomes a whole other problem to solve.
You would also have to fill and submit forms with valid and invalid data. You would have to toggle checkboxes, change radio buttons, click buttons, (e.g. "Apply filters" after changing values in a product filter section), and generally go through many combinations of inputs to find all valid parameters and possible responses.