Streamers are getting frustrated. What does that mean to the game?

So yesterday I was on twitch and turned on noxious' channel. He already was ranting about the game. He said things like that the devs don't understand their game or that the game is so uninspired right now (it's always: when you do x, y happens), etc.

Than I switched to JJPasak's stream and he said the same things but in other words.

It made me think and worry about the future of thus game. I think we all agree that it has a big potential but I'm afraid that the devs are losing the big streamers even before the game is officially released.

So should pro players be more involved in game designing? What do you think?