actually I was not complaining I simply understood from the rather syntetic Unity3d manual that you can only create and manipulate meshes at run time
I take note that C4D ( 1500 usd ) supply also the ID's which you can use to access the vertices in the Unity3d Vertices array but I have some doubt that you can do it with :

The editor of your choice

As a little bit nervous member claimed

Should the end user be bound to specific high end modelers to exploit all the Unity features , in this case I would cOmplain