Hi Dimitri, you might try the ExplodeMove command:
http://moi3d.com/3.0/docs/moi_command_reference10.htm#explodemove

But that works off of the object's bounding box center - for more precise control over placement you're probably better off using Transform > Array > Circular.

At some point I'd like to make arrays work with history, that would probably be what you're looking for really.

You can actually set that up now using the Transform > Rotate command with the "make copies" option. Start with one object, use Transform > Rotate with the "Make copies" checkbox set to place other ones, then select them and use Edit > History > Enable update to turn on history updates for those objects. Then when you change the original one the rotated copies will be regenerated.

I've attached an example file - note when you drag the rightmost circle the others will update.

- Michael