This is a topic that interests me very much. As you probably know previous fallouts had special dialog options (irrelevant to speech skill, not talking about that here) when certain conditions were met. Wonder if that will be the case with Fallout 4.
-Low intelligence dialog. For example: https://www.youtube.com/watch?v=8XllttBJi98
-Repair, doctor, science etc dialog
-High intelligence and other SPECIAL dialog (endurance, perception, charisma).
-Other perk-specific dialog. We already know something about it from the perks which were spoiled. For example we know that with certain perks, we can pacify others in combat, but will they actually have their own dialog lines like this https://www.youtube.com/watch?v=qS_fvoNGTlQ?