I don't know if something similar was allready suggested but it would be really nice.
The idea is to transfer the result of a Mudbox sculpt layer to 3ds max while keeping the lowpoly version there. Then in 3ds max i would have my Base Mesh that is used for unwraping an skinning and all the other stuff and on top as a Modifier (e.g. edit poly) is my higher tessellated and sculpted version.