Welcome to the Q&A Forum

I am also looking for something on those lines...I am 100% sure about the SERP ranking algorithms, but I am not that sure whether users like the top of the screen more or not. a heatmap would be helpful indeed

It's definitely an area of concern for me, all traffic is organic, I do not apply any paid search for this client so you are right in saying that there is a definite potential to be severely impacted with algo updates - it can be dfifficult trying to convince a client who is reaping the benefits of search traffic to branch out into alternative means as a contingency.