Anyway, many traits from Fallout return, but as perks. And many perks return, as perks. Another change over the last year is that you now pick a perk every time you level, and the perks have been balanced accordingly[lol]. Like I said before, we found the level-up-pick-a-perk experience to be so enjoyable, it was actually confusing people why they couldn't do it every level. Perks also still have prerequisites for certain stats, including your level. New perks open up at even levels, so while you still get to pick a perk at the odd levels, you won't see any new ones based on your level, but may see a new one based on say, your Science skill.
The good news is that there are a ton of perks, around 100 if you include the multiple ranks. And with a level cap of 20, you still have only 19 times you get to pick one, so you need at least 5 playthroughs of the game to use them all. It was important to us with all of this, that the choices were hard for the player, no matter what the skills/traits/perks were, and that you couldn't see it all the first time through.