[Sombre]

Well there's a list of the exact changes in the mod-zip.

Morkilus also wrote a short guide explaining the rationale behind it.

I was a bit wary of it at first and I don't know it well enough to talk about how much better or worse it is, but I can see that's it's fixed a lot of things that bother me about the game, so I use it. For instance it makes light cavalry more useful and that means the AI isn't just throwing money down the drain when it uses them.