All in the title, really farming coins is just frustrating because you have a dead point of 2 hours once the boss spawns, as no majins can spawn while the boss is alive.
It is simply not good to have 2 hours of "wait" before being able to farm coins, which are a pretty big thing currently (titles, boxs).
It would not cause any harm to the server, too, in fact, it will make box farming even better.