Ideas?
Make the brotherhood of steel in a tense situation, infighting, so to say.
Have 3 diffirent groups,
The outcasts, fighting to restore the brotherhood to it's formal self
The regulars, fighting to help others, but also remaining close to what the brotherhood was before. Not recruting civilians, still hoarding technology, ect.
and the second extream, fighting souly for others, relying on cruddier technology, but being heavier in number, recruiting wastelanders, sharing technology with the populous, ect.
Have the player either join one, over take them all into one group's views, or restore them all together temporarly to help the player's need.
Have some really cool all out assault parts, where the player's allies join up to spear head a the antigonist group, or let the player avoid it all together by joining the antigonist and fighting against some of the would be allies.
Make skyrim like civil war quest, but make it longer, have assaults on settlements, have defending settlements, and not just running from fort to fort and kill a few stormcloaks/imperials.
EDIT: already saw this on hear, but vehicles.