Alright, lets face it. Were all VERY AXIOUS!! SO ANXIOUS FOR STARCRAFT II TO COME OUT!!
We Download/Purchase the other Expansions such as Brood War, when we finish that, we want more of a story to chew on, then Blizzard releases, Stellar forces, Retribution, Insurrection which are just a huge collection of maps with specific settings to work as a story campaign, Which is easy to setup and do.

I thought why not make and release an unofficial Fan Made expansion with another story to think on with voice and such?
Won't be very big, about 10 maps per race, plus 3 other maps for multiplayer maddness with specific missions the player must do online or offline in order to win.

THIS is just an idea, a thought. What does everyone else think?

There had been a try for an unofficial expansion, called Sons of War. It somehow fails, somehow noone is working on it anylonger, it had/was supposed to have a new story, new units, new voice, new terrain and of course, new graphics + cinematics.
http://sonsofwar.uuuq.com/index2.html
That's the official homepage of them, take a look if you wish.

In my opinion you could try to bring them all back to work on it instead of trying to make a new addon (well, you want to make some maps only, eh? Shouldn't be hard but I'm not really interested in it, sorry.)

thats not the sort of expansion I was mentioning XD, anyone here ever play Retribution? The way they set it up is the way I was talking about, plus seeing Sons of War, I really do wish they would make the Expansion XD.

Problem is you want an expansion, not a modification. Meaning it needs to be compatible with users without it.

NVM,, nothing i say is going to make sense either way. XD

If you're talking about an actual expansion, then it will be very big. If you're talking about a fan-made mod campaign, see Sons of War. If you're talking about just a regular campaign, with voice acting and such, you can already find tons of those around.

To my knowledge Retribution wasn't actually an expansion, and instead an addon with more maps. So I assume you're looking for option 2. Check out http://www.campaigncreations.org/ and you may find what you want there.

EDIT:
That's because I don't think you know what you're looking for. Literally the closest thing I can think of to an actual fan-made expansion is Sons of War. But you want campaign maps, not an expansion.

If you're looking for campaign maps that bridge the story between SC1 and SC2 (which I think might be what you want, not entirely sure ) check out CC's '4 years' contest.

http://www.campaigncreations.org/forum/index.php?board=69.0