I olso dont understant why the cavalry unit and the knight only have 3 movement point except 4 its one lower then a horseman and its a more advanced unit?
They must have this in place because they feel the knights had heavy armor on themselves and their horses, encumbering them with a lot of restrictive weight. However I am not sure why cavalry is restricted to 3 movement. Perhaps 3 is the standard movement rate for horse type units.
Maybe the reason for horsemen having 4 movement is for balance to give them a movement edge so they can mop up enemy units that are damaged and the one extra movement makes them more formidable for accomplishing this. It must be for balance.
BTW apocalypse, I was thinking they should bring back a diplomat unit in some form. Perhaps embassies as well. Civs may hate each other for awhile, but there should always be some chance of later friendship. Things change overtime. Remember all the time Britain and France hated each other, hundreds of years. Then they became very close allies during the industrial age. That is why I believe diplomacy should begin anew in each era, or even every two eras. This would be my plan.
Early diplomacy builds through the Ancient and Classical Eras. Diplomacy is reset once the Middle Ages start, so all civs are friendly towards each other. Or diplomacy can be distributed randomly. So whoever was your enemy in the first two eras, may now be friendly with you. Or vice versa. They also may have been your enemy and now they are neutral. On the other hand depending, they still may be you enemy. This system would shake things up a bit and make the game more interesting. We Americans hated the British a few times in history, now they are friends, perhaps targets for friendly jokes, but friends.
The remaining Eras would have diplomacy change at random, when each civ reaches that era. Another thing, say your at war with Greece in the classical era, and he gets to the Middle Ages before you, he would still be at war with you, and his true intentions towards you would be hidden. You could choose to open negotiations to see if he'll end the war easy, or regardless of how he may feel during this era, you want more of his cities, and choose to continue fighting. It should be up to each civ in this kind of situation. Keep in mind that Greece would learn to hate you pretty quickly if you took this route, especially if his randomly calculated diplomacy status towards you for this era is supposed to be friendly.
We can either have diplomacy reset every era starting with middle ages, or diplomacy is randomly calculated. Remember wars have to be ended through diplomacy. This would require some programming among our friends at firaxis, but it can done. If Roosevelt can stand up from his wheelchair and say, "Don't say it can't be done!" Then I am sure they could handle it. A lot of times I hear, "Oh god they would never be able to program that." To me that is truely pathetic, they all know C++, believe me they could do a lot more interesting things for this game.