In a heartbeat.
You may lose a bit from St. Louis to Richards (this year and next), but then you would also land the best player in the deal (Giroux) for... Couture? Yes please.
I realize goals are worth a point more than assists, combined with the fact that the guys you'd be getting are more assist heavy. However, you cannot deny the fact that Giroux is a top 5 talent and trade value alone will net you far more than Couture any day of the week.