Hi Steve, in v3 I want to make a drop-down menu on scene browser items with some additional actions, and one of the things on it would be "Assign to this name".

Right now though there isn't any method in the scene browser to do that.

But check out this previous thread for a script which you can assign to a shortcut key which can help out:
http://moi3d.com/forum/index.php?webtag=MOI&msg=3375.1

The script is in the 3rd message in that thread, it works when you have a combined selection that includes one object that already has a name along with other unnamed objects. Then when you trigger the script by pushing the shortcut key the unnamed objects will get that name assigned to them.

- Michael