I use Red Rocket as an outpost and to recruit settlers. I outfit them there and then send them where they're needed. Only two people are stationed there and one of them is a provisioner connecting it to Sanctuary. I scrapped the power armor station and almost everything else that was't relevant to my outpost, I have everything I need back in Sanctuary and I always build a warehouse to store extra power armor.

It already has a power armor station, it doesn't really have a lot of airable land, and it's the second settlement most people claim. It's a natural location for storing and displaying power armor. It's also the hub for my provisioners in most playthroughs.

I keep no settlers there and keep my shit there so the filthy settlers across the bridge at sanctuary can't get their grimey little hands on it

Pretty much a stash area for things like power armor and companions lol

The thing is, I have 40 sets of power armor there

Yes, that sounds about right, @A.Altruist1929 , though I haven't collected all the loose sets of PA since about my second play-through. It's amusing to set up a museum there, but... no one will ever really see it, so why?

To show off to my best friend who also is addicted to F4, also I just like collecting things

I did, the NW RR and the one near Sanctuary.

In at least one playthrough, I turned the Nuka-World Red Rocket into an "Atom Cats West" garage. Got Atom Cats jacket and jeans from the crazy cat vendor near Walden Pond, and had all the settlers wear them....

Sweet.