Thanks for all of the feedback.
I ended up following just about everybody's advice and have ended up with a solution that seems to work. I gave up on inheritance and instead gave each Child (though no longer a child, per se) à copy of the Parent objet.
I was actually surprised to see that, from the child objet, I could still call the parent methods, by doing this :
$child->{_parent_object}->method();
Still not sure that is a good idea, but it seems to work for the time being.
Thanks again
s-t
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