I've recently been toying with the idea of ephemeral classes. An ephemeral class is a class which does not have attributes. The immediate benefits of such classes is that their features can be used for objectless calls, the same way we can access constants or external features.
Since ECMA allows class texts to be written as either sequences of CHARACTER_8 of CHARACTER_32 (which although not properly specified yet, we can assume means Latin-1 or Unicode), there arises the question of to what extent the two can be mixed.
I was recently reading the paper "From Design Patterns to Reusable Components: The Factory Library
by Karine Arnout and Bertrand Meyer" and I noticed that although they had succeeded in turning the pattern "Abstract Factory" into a component, the resulting class (ABSTRACT_FACTORY) did not have a sound contract.