I've got a question regarding workflow and deleting histories. I believe that you shouldn't delete after you paint weights, but what is the situation for blend shapes, cloth etc? Say you model, create blend shapes/hair/cloth, bind, paint weights - at what point does it become unsafe to delete your history?
Also, concerning smoothed meshes - should you just complete an animation unsmoothed, then smooth your mesh? Or smooth a copy, keep it aside, and then attach that mesh to the skeleton?