I've played through several Flashpoints by now and I've noticed that there are usually several places where having a particular crew skill trained sufficiently can unlock a bonus or a shortcut -- slicing the controls to an elevator, archaeology can sometimes get machinery in old ruins to work and open a door, etc.
Are there similar points where Diplomacy is helpful? IE, conversation options that only arise if your Diplomacy skill is high enough and let you defuse a situation without violence ensuing?