Visual representation of process flow variables in the design

When using large process flows with process flow variables it's very easy to make a mistake and forget to fill a variable in one of the steps. This mistake can easily be prevented if there was a visual representation of the variables in the design screen. The process action line could have some indication of which or how many variables are used, think more in the lines of how data model shows multiple references. If you see a gap in the variables used somewhere in the design screen then you have a indication you did something wrong and where. This would make trouble shooting a large process flow much easier and decreases the changes of making errors with process flow variables.