With no Itagaki the genius behind Dead or Alive and Ninja gaiden series. PS3 and 360 may get both next installments in those series.
With no Kojima at the helm of Konami. MGS 5 could appear on both PS3 and 360.
The number of console exclusive series will become less and less over time. Developers hold no loyalty to any console and only care at making huge amounts of money by porting high selling popular franchises.
GTA and DMC series once PS only franchises have now been ported to 360 along with PS3 DMC 4 and GTA 4. More money is made for the game developers. Imagine if COD 4 and Assassins Creed were only PS3 exclusives games? Developers would miss out on huge amounts of money to make a 360 port of the PS3 version.
The quality of DoA, Ninja gaiden and MGS series with the creator(s) no longer at the helm may well lead to inferior quality games in their series. That however remains in the hands of the gods and time will reveal all.
