Darth Maul was conceived to be a generic villain with no personality, and was purposely characterized that way. Before TCW, Maul was a representation of how the Sith cared nothing for their apprentices and how for Sidious all those around him, other than himself, were expendable. Darth Maul was just another tool of Sidious, he was absolutely expendable and could be replaced at any time. Maul was nobody, and that’s basically what the Sith see in others: they don’t see other people, they just see tools to achieve their goals that can be replaced at any time. Darth Maul was supposed to be a representation of the cruelty of the Sith, and it was the fact that he had no personality that made him an interesting and deep character. Not every villain need to have a great personality to get a message across. But, in my opinion, thanks to Maul’s resurrection TCW has somehow ruined the purpose of this character in the films and in the pre-2008 Expanded Universe. I don’t care if the fact that he survived the fall makes sense or not. He had a purpose within the story, and once this purpose has been achieved it makes no sense to continue his story. The same applies to Palpatine, both in the Sequels and Dark Empire: I don’t care if the fact that he survived makes sense or not. He had a purpose within the story, and once this purpose has been achieved there is no need to continue and resurrect him.