Steve,
I think I understand what you are trying to say, but would the benefit be to having just a portion of a drip area be counted in a given Work Area? Just so schedules matched up based on the sheet where the dripline was present?

There are quite a few challenges of being able to count a portion of a hatch, so right now the system is actually looking for how many vertices of a bounding polyline land within the area, and if the majority of vertices land in an area, that is the Work Area the entire hatch is included in. So, dually noted for the request, but if you have some examples of what you would like it to do, and maybe a few thoughts and mockups of how to accomplish, we can add it to our other wishlist notes on the matter.