1) Not sure. You must be starving to get a disease. It is dependent on army size, supplies and how many units dont get to eat. It's a bit random IIRC.
Miasma is a percentage * dominion strength. Not sure of the numbers right now.
2) I think it is +20 for waste, +10 for forest/mountain/swamp, -20 farm. It was a while since I checked and I might be wrong on the numbers. There might be a mountain/swamp between waste and forest making it 30/20/10. I think there is a thread about it somewhere.
3) Not sure. Press 'g' to activate the grid.
4) No
5) Morale is uncertain to us all. No one knows how it works. Your troops will not rally under any circumstances. Morale goes down by one two or perhaps three steps (the unit does not loose morale stat but the squad accumulates morale losses) depending on the failure of the test. Cowards often cause greater morale losses than brave ones. Beware of militia and starving troops.
6) Can't remember. If they don't it might be added.
7) Zen might know
Edit: This was not a very helpful answer. Sorry.
[ July 23, 2004, 13:30: Message edited by: Kristoffer O ]