Hello guys !
I searched on the forum and it seems like nobody requested this feature before :
Okay so my suggestion would be to add a "copy/paste attributes button" in the object manager to be able to duplicate objects and easily create multi-objects things :
Particles (i already did it, but it was insanely long and i did only a few D: !!), shapes, complex animations with multiple objects...
It would just make the "objects" part of the replay mod better :p !
Cu :)