[Suggest] Vector2, Vector3... to implement System.IFormattable to use C# string interpolation format

Here is my code:

Code (CSharp):

1. var v = new Vector2(1.234f, 5.678f);
2. print("v= " + v.ToString("0.000"));
3. print($"C# interpolation: v= {v:0.000}");
4. print($"work-around: v= {v.ToString("0.000")}");

You can see only the code lines with ToString("0.000") will print the exact result. I want to use $"C# interpolation: v= {v:0.000}" to print the exact result too. I feel it will be very clearly and less code when using C# interpolation only !
I suggest Unity should rewrite the Vector2, Vector3.... to implement System.IFormattable.