Hello,
I hope that this post finds you all well.
While browsing through the game, I noticed there's a way to convert D-rank slips into C-rank slips, but there is no way to convert A-rank slips and B-rank slips into lower-ranked slips.
Why is this important?
In my opinion, when one does a mission of higher difficulty, they ought to be able to convert it to slip of a mission that's of a lesser difficulty, and not the other way around. If the A-rank slips can be converted to D/C rank ones, it would not only make more sense, but open a new wave of opportunities for the players and further incentivize the player interaction while questing.
Thank you for the time put into reading this.
Have a great day/night!
Best regards,
Lex/Aomine