Only issue with creating a "titan" in the dbz category, is every ounce of work put in would be without profit, for free. No value to anyone that worked on it. You can't put illegally done work on a resume and can't legally profit off the game. It is in no way worth the effort to make a fan game, which is why they all end up in this rut of overly poor quality and/or abandonment.
This, exactly this. I'm not against fan-games by any means. In fact, I actually want to produce one. I'm also fully capable of producing one with quality content.
However, I never act on it because it will not return anything. While I'd love to spend my time producing one, all I'd end up doing is wasting time and money(art assests) on a project that will not contribute to my future goals as an indie game developer.
http://www.byond.com/games/Bravo1/ZTANI