I've found that when it's cold enough, the car generally ignores eco and goes full blast during a remote start.
It will resume your previous programmed settings when you actually get in and start the car.
On damn-cold-days I typically do a full 10 minute remote start and extend it until I'm out the door. No waiting to recharge.
But my goal is not to leave with a full battery, it's to have a car that's not -23.