Just as the title suggests, what do you want the devs to patch or change in for Civ 4 in the next expansion?
Here are some Ideas from me:
These could easily be fixed by a patch:
-Make Nukes actually destroy cities under a certain population.
-Make guided missles destroy buildings in cities.
- Change "Native America" to Lakota Native Americans were the people in the Americas (Both North and South America) previous to the European Arrival, everyone not just from the USA. (Its odd they put that in the first place because when you read the civolopedia entry for them it even talks about how the Mayans were the only Native Americas to develope a written language.)
These ideas could be in the next Expansion pack:
-Add New Leaders to Civ's that have only one.
-Add A Immigration system to recreate what happened in the USA.
What are your ideas?
I've complained about the Native America thing for awhile now, so I won't scream myself hoarse at the sheer stupidity of including two whole continents of people overlapping severely with other, contemporary Civs when there are more specific Civilizations to pick. But I agree.
Several new leaders and maybe 1-3 Civs are on my wish list. They always are.
There are events in the game already that mimic immigration, so I don't think it's necessary to add a redundant game system. Just build your culture, and immigrants will come to your cities.
- war weariness, increased if you declare war, decreased if it's been declared on you.
This is already implemented in the war weariness system. Aggressors suffer more heavily than defenders.
- aircraft carriers: strength seems to be out of proportion to other units. I think they should be able to carry at least 6 jet fighters. Also when a jet is patrolling the visible area should be doubled or tripled, after all the point of flying patrol is to spot theats before they enter within striking distance.
I agree the capacity of an aircraft carrier should be at least 4 (the number that any other airbase can contain), but there are recon missions you can send your jets on to figure out where the enemy fleets are.
- sam infantry unit replaced with mobile aa rocket launcher str 25 or thereabouts.
There is a mobile SAM unit upgrade to SAM infantry, if that's what you mean. It's in BtS.
Just off the top of my head...
1. Be able to acquire techs from conquered civilizations. I wipe you out, I get your stuff, case closed.
2. Upgrade Workers to Engineers with the ability to transform map tiles into different terrain types (with discovery of Engineering?). If I can build a levee, let me reclaim a desert or polder the sea.
3. Leonardo's Workshop Wonder: all units upgrade for free.
4. Units should have Zones of Control
5. Keep religions; just eliminate the names. Thus, "Polytheism first to discover get's to found a religion" and the player has the option to name it whatever he/she wants. The religious aspect of the game is nifty and I think it works well, but alot of people seem to have a hard time bending their heads around situations like "Stalin founds Islam". Besides, I want my civ to worship the ALMIGHTY BRIAN and spread BRIANISM far and wide; that would be fun.
6. When designing the next gen, don't get bogged down in the tactical aspects of the game, like implementing micro-managing battle screens and such not. Civ is played on a larger scale.
7. A "Move All Units Same Type" function for air units. It's a drag individually rebasing 20 bombers to keep up with an advance.
Most of these things were present in Civ II (at least in the PS One version)and seemed to work fine.
I agree with the principle of (1) that some form of tech transfer should occur when you take cities of an opposing civilization...maybe not everything, but at least a couple.
I don't care for (2) at all. That's one feature of Civ2 that I absolutely hated. Civ3 and Civ4 did much better in that regard.
(3) I have Leonardo's Workshop on my wish list reducing upgrade costs by 33%. Civ2 showed the free upgrades to be brokenly powerful, especially with the amassed warriors to muskets trick.
(4) No, they really shouldn't. Think of the scale of the game, where you have a relatively small number of tiles representing the entire globe. Even neighboring tiles could represent the distance of well over a hundred miles unless you are playing on the largest map size. And, it's not like my bows and arrows are going to cause any damage to you if you are over 100 miles away. If anything, only modern units could, reasonably, have zones of control.
(5) So long as it keeps the names as defaults (just like how cities work), then I won't care. But I like have the historically correct religions in the game.
(6)

I agree whole-heartedly.
(7) I believe you can already rebase multiple aircraft at once...simply shift-click or control-click a group of aircraft, and then hit the rebase button. I could have sworn I have done this myself a number of times. And at most you are moving 8 air units to any particular city.