Mostly this. Ashe, just virtue of her utility (something that's unique for a ranged carry) is useful in the teamfight portion of the game, especially by giving you a non-tank initiate. Her only real problem is she gets bullied out of lane too easily.
Also, PLEASE fix her mana pool if you were aiming to buff her early game with Volley, it's stupid to think she can use it so willingly in lane when she can't. She needs a better mana pool AND mana per 5 buff to compensate, till that happens this is just yet a nerfed buff!