I don't have active steering. My perception:
The steering ratio = same
The steering effort = same (at speed)
The steering effort = halved (at no speed)
When I drive on roadways and highways, the steering feels the same to me. When at a dead stop making a 3-point turn in a tight driveway, the new steering requires half as much force, no longer getting a P90X workout just getting out of the garage.
From a feel standpoint, I don't feel the undulations of the pavement in my palms, I don't feel the vibration of the tires
on the road, but a turn left or a turn right feels more responsive because the car feels faster and lighter.
Let me know if that makes sense.
Also, for the OP, my perspective is from the least 'sporty' configuration. I have a Luxury line with the standard comfort suspension. Those with Sport lines and sport suspensions will tell you that the F30 feels the same or better than the E90, based on reading past threads.
My advice to you: Get to a dealer, arrange for a test drive. Make sure you hit the "Sport" button. If after 1000 feet of driving you don't have a smile on your face, stick with the E90.