Mine hasn't improved much with use. Trigger is still heavy but the sluggish return has gone away. I still get the occasional failure to feed when manually cycling the slide. The slide release is still pretty stiff and I have to be very deliberate with it when using it for slide lock reloads.
I carry it in my pocket when working around the house a lot. The slide release and FTFs are keeping me from carrying it anywhere else. I'm considering moving to a PM9 or P290RS or even going back to a revolver instead. I think I'm going to contact Glock first and see if they will work on it.