<img src="http://img837.imageshack.us/img837/9444/1xty.png" border="0" />
As I know, There's only copy&paste, or drag object to layout editor from Projects bar or object bar. It delays work by adding additional works when user want to make quite a lot object...
I tried new tilemap edit function in C2, and It was easy and fast enough for making numerous of tiles! But It's not for sprite...
thus I think Object brush edit funtion which is simillar to tilemap edit function will be good, and It would removes need of making level editor.
or Is it already implemented? or in plan?
and last, sorry for the bad english! :D