Draw your stair starting with "Stair by component" but instead of using a run, use the sketch tool. Works the same as "Stair by sketch" but with the functionalities of "Stair by component".
Thanks for taking the time to submit your idea. Unfortunately, this idea did not get the support of the community over the last 6 months and as such we will not be pursuing it at this time. Please feel free to rework (titles and clear descriptions are really important) and resubmit this one down the road.