Height Map Factor controls
Height Map Factor control: Currently many of the bushes use Normal Factors so when you paint with Particle brush and the like you brush recognizes the differences in elevation. This however ONLY works if you import a normal. This means any of the new normal information you have created under Height map setting is not taken into account. It would be great to have a checkbox or a HeightFactor control. Currently the only way to fix this is to export your updated height map information, then reimport it and us this as your additional map. Then repeat the process as normals change.
I feel like this would make painter truly special. To me, the whole point of the data input into tileables should always be calculated into your base ao/curve, to take advantage of smartmaterials/masks. I haven't quite figured out a way if there's a utility we could create in designer to feed back into our baked maps, that could be a solution as well, if its possible.
This, we need this. Cause if I want to use a generator, it wont work on the painted height maps in substance because its not part of your original normal, so like you said you would have to export and re import the new normal. Would be nice to collapse all the height information on to your map.