the poser 'morphing tool' (little pointing hand icon in your toolbar) in Poser 7 is actually ideal for making something like a cleavage morph. you can set the exact falloff and get quite a bit of precision, and when you are done 2 clicks mirrors it to the other breast and exports it as a morph dial.

it doesnt work across body parts/groups but for something like the chest it is ideal. or for smoothing a joint, tweaking something, etc.

its definitely something every user of Poser 7 should get familiar with because it opens up a whole new world of customizations.

everyone who has P7 should open up a blank scene, load a lightweight figure like V3 with no textures and just mess around with the morphing tool for an hour to get the hang of it. it is incredibly useful. dont just think morphs - think hand tweaking every figure.
doing an elaborate render for the gallery that you will put a lot of time into? why not zoom in and flex the figures bicep or tricep, or pull out some calf musculature on a flexed calf (V4 already does this but it is very primitive)? if her body is twisted you could faintly flex her abs on one side... etc. the possibilities really are endless.

it would be impossible to create something like a full body morph like GND with it, but to tweak it, and customize it for your liking? its perfect.