I totally agree, the special ammo should be treated like heavy ammo. Empty at the start of a match, and when it does come around, only the person that picks it up and a near by team member should be able to grab it. This ammo type needs to be more scarce, especially since the blink ability is becoming a spam feat alongside shotguns. At least with increased scarcity to special ammo, the blink spamming won't likely reward them with a quick shotgun kill after teleporting right up to them since they will most likely be relying on their primary weapon.