I guess it all comes down to how you use the program...

I (personally) like the idea of having to select an object before drag move will work on it (unless you have no selection, then it would select and move the object)

(and if you drag that 4th, unselected circle, with my way, nothing would happen at all - only dragging a selected object would make it move)

Could there be an option for this perhaps? I use MoI pretty much every day and find this counter-intuitive for me :)

So to clarify:

a) You have nothing selected. You drag an unselected object. It will select and move.

b) You have one or more objects selected. You drag a selected object. The selected object(s) will move.

c) You have one or more objects selected. You drag an unselected object. Nothing will happen.