Notice that there is no concern, no breaking changes whatsoever... Just additions.

deconstructs.md

public class Coordinates
{
    internal int X { get; }
    internal int Y { get; }
    internal int Z { get; }
    
    public Coordinates(int x, int y)
    {
        X = x;
        Y = y;        
    }
    
    public Coordinates(int x, int y, int z) : this(x, y)
    {
        Z = z;
    }
    
    public void Deconstruct(out int x, out int y)
    {
        x = X;
        y = Y;
    }
    
    public void Deconstruct(out int x, out int y, out int z)
    {    
        x = X;
        y = Y;
        z = Z;
    }
}