This is about building and decorating settlements.
Ever wanted bunkbeds or you do not like those guard posts? Here you go, 2 beds on the space of one and invisible guard markers.
Alongside you get Dinos Decorations and Clutter, (more) Immersive Vendors (shops) and other nice things.
I think the another better generators is a must have, since a normal small general like resembled ingame, should be able to 'cover more' than just 3 streetlamps, but that is for you to decided.
On top of this, you get to build your own vault (no DLC!) at selected settlements, as well as your own pool.