What Would Killzone 3 Need to Have to Generate Massive Sales?

[richardhutnik]

Miguel_Zorro said:

I'm a huge Killzone 2 fan.  The game sold decently (2.24 million so far) and continues to sell.  With the game receiving Greatest Hits pricing, I have no doubt that it will reach 3 million lifetime units sold.  This is ok, but obviously not in the same league as some of the more massive shooter franchises.

What would Killzone 3 need to have to generate sales of 5-6 million or higher?  These aren't necessarily things I would want, but things that I believe would generate sales:

1. Campaign Co-op mode (2 player co-op, or even 4 player, as in the just announce Gears 3).
2. Vehicles in multiplayer.  Greater use of vehicles in single player.
3. A solid party system in multiplayer.
4. A more developed story in the single player campaign.
5. Split screen multiplayer

A ton of marketing, some new features, and getting PS3 owners to see it is their Halo, and get behind it in numbers that match Halo on the XBox.  Short of that, not much can be done.  You also have to fight against the like of Call of Duty/Modern Warefare.