Multi table inheritance

We just to know if any one interested on multi-table inheritance support on the eloquent models?

We find some topics and ready support for single table inheritance, but we think for doctrine like support

class User{
    var $username;
}

class Student extend User{
    var $grade;
}

$s = new Student();
$s->username = "test";
$s->grade = 15;
$s->save();

Now the save method must create a row in the users table, then a row in the students table.

As shown we must being able to access the inherited fields without using relation like this:

$s = Student::find(1);
echo $s->username; // rather than $s->user->username;
echo $s->grade;

Are you interested? Please notify me if you know about any ready implementation