Somebody please tell me why this item is in matchmaking. It has such a huge advantage over every other ability. Anyone who doesn't use it is at a permanent disadvantage among those who do. It promotes camping at an incredible rate as well.
There's no point in tactics or sneaking up on anyone. Use camouflage, sure. but camo doesnt really last long enough or hide you well enough unless you're standing still but also pro-vision just recharges far faster.
Coming around a corner? pro vision to make sure its safe. Oh an enemy is there? Line up the shot and pop out of cover/shoot.
It's like Counterstrike wall hacks all over again. =/
Its a pretty cool idea for PVE gametypes like campaign and spartan ops but to be in multiplayer just gives everyone a huge crutch to lean on imo.