(I don't have the game yet!)

Many people have complained that AI reinforcements are "suicidal." So maybe a mod which "teaches" them to use better tactics, and to be a little less reckless in the face of the enemy, would be appreciated.

And I agree with the suggestions to subtly decrease killing & charging speeds, though modders should be careful not to swing the pendulum too far in the opposite direction. And keep in mind that the battle time limit should be increased proportionately.

[[We could try to deduce the appropriate change in battle time:

1 % (K * C) = (constant)*(Battle time limit) ;

K = (killing speed, in kills per second; you will have to pick a "base" killing speed which is then subjected to increases/decreases depending on the type of unit, valor, terrain, fatigue, etc...) ;
C = (charging speed, in the game's unit of distance per second; again since different units have different charging speeds I assume you will have to pick one, and then use proportions to see how changing that particular speed should affect other units' speeds) ;
(constant) = (you have to calculate this)
(battle time limit) = (in seconds; if there are different time limits for summer and winter you should pick one & then use proportions)

OK, so I don't know anything about coding or how MTW works, but this is just math... hopefully I'm not saying something completely wrong or totally confusing!]]

I would really like CA to make an official patch which fixes those few problems whicih hurt the game. Somehow, an official fix would make me happier, because it would seem as if the game were truly perfect, as opposed to having to be "customized" to become what it might have been when we bought it. Hopefully this will happen. If not, custom mods are great, too.