Im 40 hours in and used 2 perk points early game in trees in hindsight were a waste to me. I know theres no respec option but it would be cool for a unique quest reward to be some sort of one use only chracter respec item. I know on PC you can muck about with console to get whatever perks you want, but on xbox this isnt possible.
Im fine with the perk system, and the character limitations it forces upon you. But it would be nice to have 1 opportunity to rebuild, with 40 hours of hindsight you have a better idea of what perks you would use more.