since i first met the big factions in fallout 3 and NV I've always wanted to create my own faction. building a town, fortifying it to protect your town from raiders, ghouls, super mutants .etc, making patrols that roam through the wastes, maybe ad a side quest where you save a guy and a few of his friends, and he encourages you to make a gang with him, and if you do you can recrtuit more people and< make it bigger and biiger till ytour a small faction, and maybe if you got big enough one of the main factions from fallout 4 would send a messenger saying that they would want to annex the area you control, and if you say no there could be like a big battle for the area.