More specific to FO4... what ones would apply to FO4.
I'm not sure we all share the same (or similar) concepts for the terms "roleplaying opportunities".
Additionally:
This is the absolute last thing that I would want in a roleplaying game.
Why on Earth should a game like Fallout target the average consumer?
The Fallout series was almost like Vegemite in a 'Strawberry Jam' market. Everything was favoring realtime gameplay, and even FPP gameplay.
They had to fight for it not to be converted to realtime as a competitor for Diablo and the like.
Vegemite is a rather niche market, and simply wouldn't BE Vegemite if made with strawberries and cups of sugar.
(But of course it cannot sell like berries and sugar.)
Bluntly put...Fallout is not supposed to BE a mass market favorite, and to make it one (as was done with FO3), is to effectively gut it of all that made it what it was, and just use the name for notoriety sake.