Multiple LaTeX Template Sets With Inheritance

Currently, I can only provide one set of overriding templates, to modify the default LaTeX rendering. Since different types of documents require different rendering, I need a mechanism to name template sets and chose a template set by name, when exporting to LaTeX.

Actually, I will have a base template set, called e.g. "base", with a lot of modifications to the default rendering, and then other sets, called e.g. "derived1", "derived2" and so on, that provide small adjustments to "base", e.g. a different title page. Hence, it would be very useful to have a means to specify, that the default templates of "derived1" come from "base".