When I climb stairs outdoors, Run, Walk, and Hike all auto-pause too aggressively. GPS accuracy is poor on the tight turns at the top and bottom of a set of stairs, so I end up selecting Run/Race just to get a better approximation of the time I spent moving. A separate activity type would be more accurate and more descriptive. If the activity has altitude data, that could be useful to be even less aggressive about auto-pausing at the altitude-based turnarounds, and could also be used to add an automatic “number of sets of stairs” to the activity.
