Would it be possible to declare a property in codeunit as it already exists in other languages such as C#.
We would use the Get and Set Assessors and Mutators to assign the protected variables of the codeunit

What would be the benefits?

1- More convenient use of the sender when using events.
2- Put the use of codeunit back in the execution of business processes back at the center.
3- Enter deeper into object development which will increase BC's overall performance. The table would become just a way to store the data (Data Access Logic) and the codeunit an object in its own right that would be the pivot between the data and the graphical representation.
4- The rest then becomes logical, we can extend the codeunit and restructure our codes towards an object model... and for Microsoft to sell more Codeunit Object pack.
5- Attract talented young developers to AL development which is similar to an old development tool. You have to send a little dream.

Exemple implementation:

protected _myVar : text;
protected _mVarModified : dateTime;

public MyVar: Text
{
get{
Exit(_myVar);
}
set{
_myVar := Value;
_mVarModified := CurrentDateTime;
}
}

procedure Save()
var
LogMyVar : Record "Log My Var"
{
LogMyVar."My Var" := _myVar;
LogMyVar."Modified At" := _mVarModified;
LogMyVar.Insert(True);
}