We know that the Borg's aim is to assimilate all worthy species to attain perfection. But the thought struck me: what then? The Borg seem to preoccupy themselves with assimilation, and this takes up a fair amount of their time, as we see in Scorpion Parts I and II when they try to assimilate Species 8472. But, even if they do succeed at assimilating everything and achieving a state of 'perfection', what is their goal then?