Suggestions: Activity detail - Stroller run

Is there any way a "Stroller run" category could be added under the Activity Detail in the workout log in order to better estimate how many calories burned during a run while pushing a stroller. I realize that not all strollers or children riding in them are created equal, but an estimation would be nice. For now I'm just adding my sons weight and the strollers weight to my weight when entering the workout.