Regarding Adjustments to Exploratory Missions

[Levi]

What are low rank monster? I - III? I - IV? I - V?
So, will it kinda stay the same for us, if we just zerg in normal the III - IV? or/and in hard IV - V?
Since my runs in diadem normal were always about zerging the III - IV to spawn V and Star rang monster. Will something change to that?

edit:1
The most important part that i see, if the definition of low rank monster. I would understand if u want to give different spawn chances for Stars depending on the rang of the monsters killed.

edit 2:
The drops chance of 210 gear in bronze and silver chests were so low, that it didnt even matter. Gold chest is the way to go. The most important part is the definition of low rank monster.