damn hard to get the Benevolent Leader's trophy..... the only trophy left to platinum this game
Did it in Sanctuary by following the guide online. Save game before then make sure you can spend 45min - 1.5 hours on it. Cannot fast travel anywhere, got to wait there until it pops.
so i just beat the main gameplay, siding with BoS... what else can i do ?? side mission ? am i missing anything else
Be sure to talk to Preston, he will always have something for you to do
Kidding aside there's side quests and DLCs. Did you go to Far Harbor yet? That's a whole big map with not so useless settlers. Did you go see the ship (along the river) South-East of Bunker Hill there i think. It's a cool side mission.