What is the desired functionality that you are missing?

Allow users to activate a self-learning threshold value based on historic data.

Which problem are you going to solve with this functionality?

Today it is possible in Optimize to define a threshold / goal for durations in the heatmap view. OPT-4507 will extend this functionality to also allow the users to specify multiple thresholds to allow for additional visualizations on top of the process diagram. 

All of these thresholds would be manually defined. However, it could be also possible to look at historic values and compare the current durations with previous executions (e.g. compare current week with previous week). This would allow the goals / thresholds to be self-learning.