I have a mod idea, but I don't have the time to do it, between Forgotten Glory and GCSE coursework.
Still, if it tickles your interest, it's worth posting.
Battle of the Gods - Gods fight it out with things like Titans, Medusa etc.
Zeus - throwable lightning bolts - could just be a reskin for a javelin, with particle effects and scripting so it glows, sends out tenrils of energy (just an effect) and disappears on contact.
Thor - Stonking great war hammer, like an oversized lumphammer on a longer pole - sledgehammer, now I come to think about it...
I know a lot of these effects are possible - I've seen screenshots of magic and fireballs in someone's mod (fisheye or yoshiboy, I think)
Research would be needed into the gods to find out how they were armed, how they looked etc.
I think it's a feasible, if hard, mod idea, but unfortunately I have no time to try it, so I'm just giving out the idea.