For a change in the game's aesthetics and how you can make your character look while stomping across the Commonwealth, this is the mod that should unquestionably be downloaded straight away.
The UCO mod completely opens up the clothing opportunities, allowing you to craft essentially any outfit you can imagine while still have the benefits of armor. If it's something that appears in the game anywhere on any NPC, you can now equip it as your outfit.
Don't like how your current armor looks but prefer its stats? No problem, with UCO you can make exterior clothing invisible, so the defensive qualities remain while the cosmetics are shifted to whatever style you prefer underneath.