User blog comment:DanielM4712/Modern Warfare 3 Multiplayer/@comment-General Gameplay Ideas/@comment-1721748-20100106015105

Cross Platform would cost a ton of money, and would need deals between Steam, Sony, and Microsoft (I can't see that happening).

Not weapon upgrades, new weapons or reskins.

Flashlights are unnecessary, and they give away your position. Laser pointers too.