A Spark

(sidebar: i loveloveloved your Echo story - what I hoped mine could be with some more time. love.)

Here is a presentation of some of my ponderable ponderings

1-2. The Heroine- Lately when imagining her, I've come up with some ideas. I'm thinking she could be a bounty hunter of sorts, a real Claymore/Kim Possible type. (With the awesomeness of the former and the expert styling and awesome hair of the latter)A girl, teens, awesome outfit. I think this post could open up doors into all sorts of shennanigans, storylines encompassing multiple mythologies, stories, plots, and charactrers. I dont want to limit ourselves to Greek, i personally enjoy Norse and Egyptian enough to take a peek at some wikepedias. Think of the variety of Fate/Zero... King Arthur, Alexander the Great, and Heracles all in the same place. Meshing these worlds together into one, and providing a perfectly competent heroine to explore them could be magical.

3. I appreciate a good sword as much as the next girl, but i find fencing a little tame for a fantasy environment. Somehow I think you'll agree that a double-handed broadsword is a little more fun :)But somehow I also appreciate a certain Batman (who might also make an appearance?)-esque style of handling baddies with inventions and cleverness rather then strength. Perhaps we can compartmentalize different styles into different characters. Everyone needs a sidekick/support characters. Everyone.

4. Robots can make an appearence - I like that a setting/plot such as this one can be very flexible with storyline (much like Gunnerkrigg Court). Transitioning from Robots to Fairies to Egyptian Gods seems very natural.

5. A major villain is a very long-term commitment, but i agree on what you have said detailing them. I think initially we should focus on one baddie at a time, to be conqured within a short chapter plot arc. Then maybe they will eventually all tie in to a bigger villain. But a villain also means limitations. After they are defeated, what is left?

6. Sisters - to be quite honest, when reading the Hunger Games, when Katniss was actually in the arena I did not care one iota about Prim. I was all "OMG PEETA IS DYINGGGGG!" But I do agree that a sibling is a much stronger thing to fight for then a recently met lover. I just dont want to rule out having one because I am a teenage girl. And these sorts of things need to be on the back burner to keep me interested. But a brother/brother and sister/sister or even brother/sister pairing is nice. (Alphonse/Ed, Katniss/Prim, Hansel/Gretel Forever)

8.Magic is fun. And colorful. Win.

9.I like parents, in the way that you can guess who they are (Naruto) or see the resemblance/inheritence of traits (Anja/Donald=Kat, Surma/Annie) in your main characters. But it's always so sad that they are mostly dead :(

Specifics

1. I was thinking maybe Hermes could be her employer. With his myraid of roles, he could have an infinite ammount of assignments or oddjobs that would make an excellent story.

Possible Characters
Heroine, Sidekick/Partner, Love interest, Employers, Clients, Enemies, Rivals (maybe she could attend some time of school for this kind of things, exploring the classes and the students within them - a rival pairing going after the same jobs), animal companions (Rey, Rufus the Naked Mole Rat, dog, wolf, pheonix, etc.)

I will come up with some concept sketches for characters soon! Call to remind me occasionally...

things that should be in the BEST story.

Things!

List generic overarching things that could have anything to do with the story

1.  Heroines! Hero! Pure of heart, proper and tall, neat, fair and handsome, and straight in each limb. Or nerdy, strange, curious and brave. Or some combination of all of those.
2. Myths/Legends/Fairy tales/Gods out of place and time
1. I always love stories that are linked to other intricate webs of stories that the reader may be familiar with but that take on so many shapes and forms they can be retold really however you like. 
3. Fencing. Swords are a must.
4. Robots?
5. Extremely villainous villain(s) 
1. I personally am a fan of those who don't believe that they are indeed villainous, whether they are working for what they believe is a good cause and there methods become twisted over time, or something so ancient and old they really don't give a damn what is good or evil.
6. Sisters.
1. Heroes need something to fight for, and I always think the unconditional and unwavering love between siblings is so much stronger than true love or love at first sight any day. Part of why Katniss is so great in Hunger Games.
7. A deux ex machina
8. Magic of some sort, not necessarily in the traditional sense
9. Parents! That exist, and love, or at least have some exposition before they are brutally murdered some time in the past. Like the two Doctors in a Wrinkle in Time, Surma, or Naruto. I always thought generational connections were really interesting.

More Specific Things!

elements/characters that are particular and you'd like to use throw in

1. Hermes
1. whatever we end up writing, I'd like to use Hermes as a relatively important character if we end up incorporating old myths and legends. He's my absolute favorite and there are few really good stories about him where he isn't just a mail man. He's also the patron of boundaries and of the travelers who cross them (which is also good if we good we go the quest route), of the cunning, of thieves, the silver tongued, literature and poets, and invention, which I think is much more interesting than just messages and his psychopomp duties.
2. Legendary Weapon
1. The Vorpal Blade and its *snicker snack* sound effect was my favorite part of fables, and I also love Coyote's blade that has coyote's laughter teetering on the edge. I think an epic weapon should definitely be in there.