I started a new game recently - Large Map, Continents, 80% water, Normal/Normal for temperature and wetness, 5 billion yrs, 8 civs.
I chose the Iroquois. I chose a larger map w/8 civs in order to try out the whole expansionist thing, figuring even with 80% water I'd have room to do so. Wrong. The map generator (which I think is soooo much better than CIV II) came up with 3 continents. 1 large, 1 medium, 1 tiny. On the large: Me, Aztecs, Zulu, Babylonians, Americans, Persians. On the medium: English. On the small: French.
I was boxed in right away, so I decided to make like Ghengis Khan and use an early blitz w/Mounted Warriors. THOSE THINGS ROCK! The fact that the Iroquois are purple, like the Mongols in CIV II, added to the experience.
I annihilated the Aztecs, crippled the Zulu (who later made the mistake of getting into a war with my friends, the Americans. I gave Abe a right of passage, waited for his vanguard to soften up the best Zulu cities and then attacked and took them. Abe got one city out of the war
), and with the indescriminate sacrificing of my citizens to the gods of production (rushbuilding under despotism), I had solid culture. I captured the Great Library from the Aztecs, which evened me up in terms of tech, and once I went to Republic I was bigger&stronger than anyone else. It is now 1490, my rail net is mostly complete, the Hoover Dam is under construction, and I just found out that I have ALL of the oil! NINE oil resources in my territory. The Babylonians, after I beat up on them for a bit (for coal... I captured 1 city, razed 3, and build 2 new ones to push back the border), have finally wised up and have a Protection Pack w/the Persians. I may take them down anyway... once I have tanks.
Anyway, the expansionist thing didn't help me, really. The scout does help with early exploration, but the huts I popped gave me either 25 gold or their lovely maps, which are useless if you have a scout to begin with. The key for me was definitely the special unit. 3-1-2, available w/horseback riding, makes it one of the (if not THE) best UU's in the game. Sure, the legion is more balanced, but it has only 1 move and requires iron... same thing w/immortals, although at least they get the 4 attack. Mobile units are incredibly useful in CIV III, as the only thing that can really
kill them is another mobile unit. Getting beat up? No problem - run away.
I'd say that the Iroquios are pretty solid, especially if you like fighting early on, and would be absolutely hardcore if they were militaristic (or any other attribute, really) rather than expansionistic.
-Arrian