I would like to see display items when building my settlement like equippable mannequins to display my armor and cloths and display cases or weapon racks to display weapons like they did in skyrim

Agreed. I'd love to see things like that. I'd like to have some actual gun racks to store all of my guns in, along with mannequins for storing my armor and clothing. The closest you can get it building shelves and storing guns on them, but this is kind of sketchy because of the tendency of objects to sink through the things they're sitting on.

I'm really hanging out for a mod with mannequins - I love creating display armories.

They could also do like in skyrim a trophy style statues like a stuffed deathclaw lol