We also may want to define what constitutes a big collection. Is it defined by the total number of different sets or by the total quantity of sets regardless of variety? For instance, suppose someone has, say 1000 sets of the same thing to amass an army; would that be the same as someone who has 1000 different sets?
While this is an interesting question, does it really matter to anyone? After all, isn't it true that it's not the size that matters but what you do with it?