i reckon the pistol MUST return in some sort, without it Halo wont be anything, because the pistol was such an important weapon for the start of every Halo game. But the sniper is the weapon im waiting for, im hoping a Halo 3 look to it but with the Reach mechanics. The plasma pistol im not expecting in Halo4 but i think it will be in Halo 5 and 6.