Hey, Rani from the Saleae here. First of all, welcome to our forum 
As @Collin said, we’d love to add that feature but we don’t have a timeline yet. However, I’d love to learn more about how you’d like to use a feature like that. Would you like to see the graph side by side with the digital data or just to be able to easily draw it?
For example, we had an idea of attaching Python Notebooks and allow users to analyze (and draw) the data using them.
What do you think?