Do primary objectives/people have a visual cue that lets you know you are about to embark on a major event (potentially missing uncompleted content)?
I know I can go reread my journal to figure out who I am supposed to be talking to but therein lies the dilemma. I tend to try collect all of the quests and events I can in one area before I go and attempt to complete ANY of them, the list can get pretty long. I then review the options I have and choose the missions I think will advance the story in the way I want. I don't want to start/complete missions on accident and preclude myself from other more interesting/in-character missions.
There are similar questions that deal with specific branching story lines and points of no return but I am wondering if any important people, major/minor quest givers, quest completion points, etc. LOOK different than one another.