Dont mean to sound rude, but a lot of these are covered on the GOS website.
All your hardware inquiries should remain the same.
Smooth display is there, brightness should be the same, the camera is different but you can download the pixel camera to make it like stock, battery should be the same or better, i think wireless charging works (dont quote me on this one, i dont own one to try), thats super specific and im not sure. It should?