I haven't been able to find this information on my own so I figured I might as well try and ask here as there are some parts of how this area works that I am not entirely clear on.

What significance does the rank of the enemies you kill have?

Do rank 5s have a chance of dropping gold chests at all?

Our FC isn't too large and it would be helpful to know this stuff so we can figure out the best course of action for our group. When we can get a decent-sized group going during the weekend there can be tons of people in one spot making it difficult to get credit as stuff tends to die too quickly. If we could go off on our own in a group of 8-10 people to kill weaker enemies while still being able to spawn stuff that can drop gold chests it would be nice.

Can anyone else that typically runs with a group of that size chime in with some advice? To add to my above questions, how viable is getting drops from hard mode for a group of this size? We are still working on unlocking that so if there is any information relevant to normal vs. hard mode it would be useful as well.