Hmm. I'm trying to figure out how to respond to this without being that annoying fan ranting about a game no one else plays or cares about.
I have... to disagree on the Human Revolution point. I loved that game, don't get me wrong, but it didn't really feel like Jensen was different no matter what. I usually play either an angry kill-em-all Jensen or a sneaky-sneak pacifist Jensen, but most of the differences I have between them come entirely down to headcanon and roleplay. Granted, it's been a while since I played. (And I should probably do another run through to prepare for Mankind Divided...)
That was my point, which was evidently not very clear 
Angry murder Jensen and pacifist, kind Jensen share a plot, VA, cast, and worldstate. But IMO all of the little tiny roleplaying decisions in dialogue/sidequests, and the difference in headcanon, made them feel like two different people. Which for me changed the overall experience of the game. Though I get that it won't work for everyone.
*Sigh* Maybe I'm jaded because I've freshly completed a game that really did alter itself in response to your decisions and choices (One choice in particular.) and it was made by random indie working mostly by himself on a comparatively shoe-string budget. It feels so strange a guy like that can make me feel like my choices matter, when a studio of industry vets with corporate backing can't.
One of my favorite survival games is Zombie Exodus, done by one guy. It's probably the most responsive game I've played recently. It's also only text and pictures. That's why Zombie Exodus can actually alter its world, cast, and story in response to player action. All it costs is time and text. The guy writing it doesn't have to come up triple-A quality animations, art, and VA for each potential branch. He doesn't have to pay people to create that stuff. This is also why modders can create so much for the game, with apparently so little.
EDIT: Sorry if I come off a bit touchy about this stuff. Absolutely nothing against indie game designers or modders; they do awesome work. But I have a few friends who work for large studios, and sometimes I feel like all they get is "Why didn't you include everything we want?" They do work their butts off. But budgeting is a different beast if you work at a studio like Sony or EA or Riot, and nine times out of ten, budget is the reason why something couldn't be done.