complex_field | A POC for modeling complex data with Drupal 's field system | REST library

I wish to use dataclasses in Python to create a base class and several derived classes. These classes will contains complex attributes, such as dictionaries. I want the derived classes to change only part of the dictionary defined by the base class, is this possible? Or am I better off with plain old classes?
Shown in the code snippet is the current situation, this seems wasteful in terms of code duplication.
In this example I could define a function that accepts a single parameter instead of the lambdas, but in a real world example I would have to define a function for every such case and that would be cumbersome.