The teleport immediately sent everyone to Italy, Rome right straight to the Colosseum. Given the time difference, they had to wait a little while longer for the crowd to subside …or that was usually the way things worked.
If Jin did not know any better about the Void Beings, it was no doubt the best solution to wait for the monster to appear and they react accordingly. But this time around, everything was different mainly due to the fact that Jin was in possession of a Void Being, Farasha that snappy crocodile with butterfly wings.
Thus instead of waiting for the monster to appear and give them hell on their planet, Jin decided to do the opposite and invade them. The System, on the other hand, felt that it was not the most optimal of solutions as they had always been defending their world from the Void Being invasions. It would be a different story if the humans invaded the Void Being's parallel world.