welcome! u guys lucky getting so much love from iRO, we X-mRO only getting 2x exp/drop with novice lvl 1 during iRO welcoming event hehe
pRO may have a really low population now, but the number of players that quit because of the management and change in culture is quite big. If they happen to make a comeback then it can potentially fill that server up.
Plus, that new server is needed so that ex-pRO players can get used to how things work in iRO first (see Necro's post). Given pRO's current state, it's somewhat a necessity.