I don't see why the core game mechanics would need to change because you don't like the consequences of your actions and/or decisions.
Things won't always go your way even in the most ideal circumstances, and that's echoed here.
Want a different outcome? You could always do another playthrough.
Besides, some of my most memorable situations have arisen because of failed rolls and bad choices.
This post is not so much about dialogue checks. It's about trivial task checks, or other skill based checks that determine if your character is able or unable to perform a task.
