I'll probably buy it while it's still "new", but I'm not building hype for it at all, that way I don't get disappointed. I found I enjoy more games more the less I hype them up to myself.
I don't watch trailers, while I am getting I have low hype as same thing I did with F3 when I first saw it was 0% hype. "Hey this isn't bad" Plays it for 300+ hours.
As of now you, according to the trailers, you can customize: Spoiler Your weapons Grip/Sight/Firing Rate/Ammunition and take a Laser Pistol to a, for example, Automatic Laser Sniper. You can also customize your very own suit of Power Armour by scrapping and changing each individual section from your: Head/Left/Right Shoulder/Left/Right Arm/Torso/Left/Right Leg all individually. Finally you can create your own base in the Wasteland.