Heyas,
I'm currently playing my own scenario that others might like to try, too!
I've decided to create fortresses one by one from the dwarf capital near the southern border through to one of the coastal towns to the north.
Each fortress area is 3x3 and directly adjacent to the last fortress. Each will connect to, extend, and direct the road from the previous map through to the next fortress. This is so that
- it will be very easy to find my ruins in adventure mode with dwarves,
- my dwarf adventurers will have a nearly continous road from capital to coast,
- I will have neat string of ruins to search through and plunder on my journeys (all dwarven gear, mind you!). Some ruins will be off-road, some will have the road going straight through it.
- I can try to make as many unique and interesting mini-fortresses as possible in the short time span it takes to build the road.
I will also often be making my mini-forts in areas that I wouldn't normally be choosing. I don't tend to go for those dreaded maps with aquifiers, or those without vegetation, or those overlapping towers and dark fortresses, or maps without rivers, or with settling dwarf teams made using the Play Now feature. This will really test my skills.
And best of all: I'm playing each mini-fort only just enough to continue that railroad through the mountains to the shoreline!
I'll post a pic of the world map tonight, and the two gateway forts I've made so far. 
[ June 11, 2008: Message edited by: Faces of Mu ]