I get what you’re saying, but your issues is really a small FOV viewing area and not the actual size of the weapons.
Putting your arm out in front of you isn’t the same as in game. Imagine You’re wearing a set of horse blinders designed to cover the area immediately above, below, and to the sides of your eyes, blocking everything else on the sides from view. Now, put your hand out in front of you and it will take up a lot of the area you can see.
So, your issue isn’t weapon size, it’s viewing area being so small.
So, yeah, you’re asking for a larger FOV as others have asked.
As explained above, shrinking weapon size would be actually shrinking them in the game, so other players would see you walking around wielding a sword half the size it should be. It’s not aesthetically pleasing and would be off putting. And shrinking models would be bad for PvP.