If someone would want to get a mule up to lv80 frequently, then yeah, that is a pitfall.
Originally Posted by Ruriko
Oh didn't think about that! but too bad it won't do for boosters
But if one is resourceful, there is always the Duck Keychain. Can't complain a whole lot about a small EXP boost that is permanent. And a little WT boost is always nice too.
EDIT: Ninja'd by L. I did a quick read-through in the Wiki and found that the boosters from the boxes are unbankable. Now I'm confused.
The wiki did say that the sprints are bankable however.