Rust buffered I/O convenience functions idea

current.rs

use std::io::{BufReader, BufWriter};
use std::fs::File;

let src = BufReader::new(File::open("input.txt"))?;
let dst = BufWriter::new(File::create("output.txt"))?;

proposed.rs

use std::fs::File;

let src = File::open_buffered("input.txt")?;
let dst = File::create_buffered("output.txt")?;