Ramiel's Arc needs to go into the List

I like fighting EBs and EB-scaled AVs. I'm really pleased that we have the option to see them over and over again via the wonders of oroborous.

But... Mender Ramiel's arc is a one shot, I guess due to the reward at the end.

Would you guys be so kind as to do something like what was done with the Warwolf whistle to make it so that the arc can be redone by those interested in fighting the enemies?