Hello,
On the same methodology, ice run and plaqued run were desgined in a way in which you needed a mage and an assassin to finish the run.
Since both classes got a huge monster buff...we could say they are even with the other classes and having an advantage in those run as they are mandatory...is no longer needed.
my suggestion is to change the egg task so that any class can damage it. I do not see a reason for which sin needs this advantage any longer.
kind regards
Diury