Lore wise I think the ending is the best part of the game as it had me thinking about it for a day or two (I love that).
Some would argue the concept of a multiverse is predicable and a cop out, others might argue that New Game Plus sux as you lose everything you’ve spent time on and can’t pick different traits, but personally I love that stepping through the Unity is all about man’s hunger for more power.
The way I see it, if you step through it enough times you end up being like the Hunter. Bitter, lack of care and empathy, probably a lot like how power affects people in real life and how it can corrupt the best of us.