Here are some thoughts about Glest campaigns.
1. Which campaign is first?
It depends.
If they'll be HEROES which take part in BOTH of campaigns, and campaigns are binded tightly, so... You'll have to look to the script of campaigns.
3. Artifacts.
It'll helps to build campaign too. Say, 'Sword of Dragon'+12 attack... It'll be MORE then welcome to have one of those.
For magician there can be artifacts to give some powerfull spells like ChainLighning (m-m-m-m.... my favorite
.
Here my first-come-to-mind small explanation.
Long time ago, in a far away galaxy...
One day, one man found old book. He is starting to study it, and one day he realize, that it's a magic this books describes.
He is starting to understand more and more of written on this old language. He is startnig to get a school to teach peoples.
So, some of the people starting to learn magic.
As they learn more, they become more prosperous and more powerful.
Now they can dicatate to all their own rules.
They think, that if you have MAGIC, you can DO everything. And they are starting to invent ONLY MAGIC. And all other science seems useless to them.
They even prohibit to do science researches. They think it's a wasting time and money.
So, they are starting to increase taxes, take all good places for living to build their academies.
Same old totalitarizm if you like
One night technics secret base was destroyed by magicians. It was Judas who told there it was.
So, our technic hero (say, his name is Izo... I don't know why. Just Izo).
[1 mission]
First thing you have to do -- it's to get to nearest village.
[Victory condition -- get to village]
[Lose condition -- Izo get killed]
First map is classical "let's get to know interface". "Hero comes here", and "Hero comes there". It's very simple.
There you meet some of the other techics survivors (say, swordsmans and archers).
As usual there are small bands of opponent patrols, which can be slain very easely.
My favorite thing in Warcraft-III it's that if you'll search ALL map, you'll always found something interesting. It can be artifact to increase attack or defence skills.
But it might be also 2-3 POWERFULL units, like ornithopters.
So, finally, Izo gets to village.
[2 mission]
Now you have to find one of inventors, who recently invent robot. Izo thinks that robots are helps him to win the war.
[Victory conditions -- Find inventor]
[Lose conditions -- Izo get killed]
[submissions -- build barracks, 3 swordsmans, 3 archers... bla-bla-bla]
It's the first map with micro-economics. And you'll have to build base first. Then you'll have to ruine magician posts to get to inventor.
...................................................................
Uff... If somebody is still there, here are some other thoughts about one possible twist of script:
[mission N] After killing one of the magician, Izo found magician artifact.
[After it there can be scene where are some magicians are discuss this. And they telling, that "ALL is going like they are planning"]
[mission N+1] Izo use it to attack magician, and artifact helps him to kill a magician more easely.
[mission N+2] Other technicians are become more and more worried about this artifact. They come to Izo with delegation. But he is staying deaf to all their speaches. He thinks that artifact helps them to achieve main goal -- to stop war. They are insist on to destroy artifact and "stay clear technic". But Izo is immune to all their requests. So techincs are put forward ultimatum: "next morning Izo must destroy artifact. Otherwise they are starting attack."
At this night some magicians are coming to Izo and propose to use all his power to get more "freedom". They are propose to kill all these "falsy technics". Izo declains their proposal. He thinks that technics will never attack other technic.
But on the morning battle begins. Izo kill all technician opponents.
[mission N+3] Izo now is friend-killer. So, again magician are come to Izo and propose to get to their side. And he agrees...
4. So. Here is the formula:
"Heroes & artifacts => script => missions => campaign".
Vadim V. Balashoff