The cost of a unit doesn't always mean a lot. Cavalry are expensive because typically you're talking about supplying a soldier with finer armor and weapons, one maybe two horses each, tack for the horse, sometimes barding, etc. Although they might still be vanquished by a cheap ass gallic farmer with a stick. Just like sports, the key to winning battles is all about match-ups. You have to know thy enemy. There is nothing more brutal than missile troops with spears for a cavalryman. Indeed the spear is the bane of cavalry. I am wary to charge spear units even from behind with cavalry because the spear units turn around eventually. It happened a lot in history that cavalry would dismount during a fight and make an infantry battle of it, but the engine doesn't allow this. M2TW just drove me crazy when their cavalry would charge frontally right through my pikes.....unggghhh. Cavalry is perfect for me in EB but if it isn't for you I understand why you want to change it. It's your free time, and it is a game so it should be fun for you. That being said...

Arkanin, it's all about how you want your game to play. You have to excuse the many diehard fans of EB. Some people don't like when people walk in and start saying how the mod is flawed in certain areas. This mod has a long history and many hours of work have been done. Nothing in EB has been done without a lot of discussion and research. There always seems to be someone who thinks the mod should change to fit them. A better place for this would probably have been the unofficial modding thread where people are more receptive to these kinds of changes and would be happy to help you implement them. At any rate calling people immature and the like is not going to solve anything. It will probably just turn into a flamefest and will inevitably be locked. I'm not naming any names but if the shoe fits wear it. Never get into an argument with an idiot, they'll drag you down to their level and beat you with experience.