This is my main gripe about the game right now. The co-op dialog system with npc's (not the system where both people get to talk).

Anyone I want to play this game co-op with, doesnt want to play it co-op, because trying to follow along with the dialog is near impossible for the person who didnt click to chat with the NPC. Its like co-op was thrown in at the last minute, without any real game mechanics being designed for it. Its an RPG, there is going to be talking, to exclude one of the players from this is just a broken mechanic. It needs to be revised and fix. ASAP.

One simple solution would be this:

Currently, if a player clicks the other players portrait, it will warp their camera view to be that of the player they clicked on. Make this an OPTION for when that player is in a dialog with an npc, that the other player can do, to view the dialog window that the player is viewing. Sure, they wont have the ability to interact with most of the conversation, but they can at least READ what is being said by both the player and NPC, and the available dialog selections, and what the player selects.

Allowing the player who is not chatting, to choose if they want to click the portrait or not, works perfectly, because if they dont care about what is being said, or dont want to be interupted from what they are currently doing, they wont have to be bothered by it. But if they DO want to read it and follow along, they they have the OPTION to do so.

Seriously... this mechanic is about as flawed as making a car without wheels. So what if it looks nice, and lets people get inside it. So what if its got a great sound system. If it cant go anywhere, its broken. An RPG is largely about the storyline, and if a player cant take part or follow along with the story... ITS BROKEN.