Fallout 4 could be better: it could have more Strong in it.
I look at a lot of Fallout 4 mods, but IS BEST FIGHTER Strong v2 by Demon9ne is one of the best I've seen in terms of presentation. A companion overhaul, it makes several changes to Strong which are detailed here by the Supermutant himself:
That's just the start of it, though; the full mod description includes a breakdown of available Supermutant armour which is also well worth reading.
This is just one of a series of companion overhaul mods from the same creator, designed to stick to the spirit of the original characters while mkaking them significantly more useful. While the others don't have the same colourful presentation, they're all very much worthwhile checking out. As well as fixing bugs related to perks and preventing your buddies from ruining stealth all the time, the mods rebalance companions so that they have skills and abilities in-line with what you'd expect of a Commonwealth denizen.
In-game lore suggests that the player character (Sole Survivor) is significantly more powerful and skilled than even veterans like Preston, as the future Sanctuary crowd's reaction suggests when you save them from trouble in Concord. Even so, some companions can feel annoyingly squishy and useless in a battle. A rebalance addresses that nicely.
Also, there are some really interesting cosmetic changes - like giving Curie synth eyes, which change colour depending on her status and relationship to the player, and go dark while in stealth. Pretty cool.
Check out Emergent Design Curie v2, Rough in The Diamond Piper v2, Soldier of Misfortune Preston v2 and Uncaged Cait v2. Even everyone's favourite weapons vendor gets a look in as DESTROY ALL Cricket v2.