AWESOME I'm a huge Warhammer nerd! You should troll the Warhammer forums for people who are interested and can help, I'm good at writing unless I get writers block. I could help come up with faction plots, characters with backstories, that sort of thing. I have to say up front that I mostly know 40K stuff though. Gah this is just such an awesome idea that I really want to contribute, I'm just not sure how much good I'd be.

this would be pretty awesome :3

I foresee a Cease & Desist letter from Games Workshop in your future.

Games Workshop Cease-and-Desist | Gamers Rights Law
http://gamersrightslawyer.com/2009/12/05/gamesworkshop/

Games Workshop Cease and Desist | BoardGameGeek
http://www.boardgamegeek.com/thread/467242/games-workshop-cease-and-desist

what the police does not see, has not happened. there are also warhammer mods for civ 4 and there were no issues.

Don't get me wrong, I'm a fan of both Warhammer Fantasy & 40K and would enjoy seeing a mod for Elemental.  I'm just making sure you're aware of the potential issues.

What you can and can't do with Games Workshop's intellectual property
http://www.games-workshop.com/gws/content/article.jsp?catId=&pageMode=multi&categoryId=&section=&pIndex=3&aId=3900002&start=4

Modifications, Total Conversions, and Games
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Vampire Counts are listed twice (yes I like nitpicking  )

The mod looks interesting btw, should add some depth and diversity to the game.

He can do a HammerCraft mod. If you get what I mean...

Well if Games Workshop decided to be total jackasses and issue a Cease and Desist he could just change a few names and release it as a Hammercraft mod as Wintersong said. There have been Warhammer mods for several other games, so it's well worth going ahead with.

I was aware of the possibility of evil GW intervention when I started, so I'm still going ahead with it. If it comes to that, as said, I will just change a few names around Valentine82, it would be a monumental help simply scouring the many wiki's and getting all the necessary descriptions and such from them, as well as any important info I've missed out. 

ATM, I'm working out what to do first. Probably going to be the Human Factions, and working out what I can keep the same in the game and what I have to change. Might be able to get a few races done by the end of the week hopefully

Just point me in the right direction and tell me what you need, I'm always up for a Quest hehe.

Sounds good...however, looks like this is mostly the 'big idea' stage right now. We can't really do many of the things you want at the moment...probably going to be awhile before we have the mod tools needed to really go wild.

How do you plan to handle the gameworld? The Warhammer fluff doesn't really go well with the standard 4X setup where each faction is building up from nothing. For example, if you started in 'Ancient Times' the Slann, then the Elves and Dwarves, would be around making big empires...the Human factions would be primitive barbarians for thousands of years. I imagine that you will throw out the idea of timelines and whatnot for the sandbox. Do you plan on doing a map of the Old World or Warhammer World?

What about units? Warhammer has pre-designed units, so do you plan to limit the design ability of players so that you can have people stick with fluff units like Greatswords, Corsairs, Ironbreakers, etc.? How do you plan to deal with research?  

I can see a  scripted campaign working out well.

Not trying to be overly negative, I hope you are really successful and I might even contribute to something like this...but right now this sounds like the typical mod idea with very little chance of becoming anything more than a list of ideas and features. You are currently proposing something really, really ambitious...I recommend scaling back your ideas to focus on a few core concepts before trying to take on the entire Warhammer concept. Decide what the most important thing is and focus on that to start with. I personally think the factions are the heart of Warhammer, so that would be a good place to start.

I would say if you can create something iconic such as a new Orc Faction with unit models, buildings, etc. then you will have a great start. Once you have something like that you can keep expanding. It might be easier to start with something like the Empire since Elemental already has lots of Human-based content.

Good luck!

Seems Goontrooper and I had the approximately the same idea. I prepared this response earlier and decided to think it over before posting.

I'm tempted to offer my XML and Python scripting abilities as I'd like very much to be involved with a mod, but I'm concerned about the scale of this mod. It will take a large team to make enough models and textures for 12 distinct races plus 11 sub-races. I don't think I've ever heard of a video game with so many races and factions. Furthermore, balancing will be a nightmare. If you cut the scope by 25% - 50% I would be much more interested.

Oh!!!!  SOLD!  I wish I could help, but I am not a programmer or an artist.  I can playtest, and...  what else would you need help with?

This is the initial idea, I'm probably going to implement them in stages. I know it will be a long mod to make, but you got to be ambitious to stand out I'm currently doing a Games Design course at uni, so this should fit in quite nicely with it (mostly scripting and designing).

I think a good target at first would be to get the similar races into the game, Empire: Humans, Chaos: Krax, Elves: Wraiths. A lot of them are re-skinning jobs.

Just made a stage one plan, I want to get a few races down first, re-skinning will be needed, but nothing too hard

Next will probably be getting the equipment done.

I'm thinking the best way to go about this is in batches of races. Do a few races at a time, do there equipment, then the magic. I think I'll leave magic until last, but that may change, as magic is quite core to the warhammer universe

As for the game world, I'm going to sacrifice story for playability. It will probably something along the lines of extending the warhammer story so that it is after some kind of cataclysm, where the races are starting out again.

As for the units I will try and make the set units, but still give the player the option of creating new ones, as that was one of the things warhammer was about, customizing your units with different weapons, armour and items.

For research, thats going to have to be a whole new tech tree I think, and for now I'll try and incorporate it into the current one, with a few modifications.

So here's my reduced version proposal:

Only do 4 races, using current races, re-skinned:

Empire(Human)

High Elves(Wraiths)

Chaos(Krax)

Orcs(Troggs or Urxen)

Once the races are done, I can work on expanding them with there own equipment.

Oh and, I'm going to try my absolute hardest to keep this project running

EDIT: Just had a go at making elves from Wraiths - 

Now to mess with the settings