'Probably next in priority is to have some more traditional CAD functions like some basic dimensioning.'

Happy to hear this Michael! It is a much needed thing, indeed, in Moi. Very often I have met the need of a way to change in a precise way the dimensions of objects. I have a ring, for example, I do measure -with the add-on script that measures the distances- its finger hole but can not change it so that all the ring may change uniformly according to the new dimension. It would be great to see such a tool in the new version!

Now, as to the cage thing, it is just a matter of the need for a more controllable reshaping of the objects. Below I am putting a screenshot giving an idea of my experiments with the 'flow' tool. It is good, without doubt, but it does not fill the place of a reshaping cage that would envelop all the object, giving the opportunity to reshape easily from all sides.

(the renders are made with Blender's Cycle renderer)