It has 3 different levels: basic, gameplay, and expanded versions and you can choose among them depending on how much of a change you want. Additionally to the new troop trees, it offers improvements in gameplay, graphics and many other areas. This mod pack enhances native gameplay by combining a wide range of mods provided by the Warband community.
If you were looking for more gameplay-changing or bug-fixing mods rather than total conversion mods, we were saving this one for the last since it combines a lot of great small Warband mods together.