New strategic options - you can pre-plan battles and formations, pick who follows you into battle, and in battle you have options to new formations and commands.
New character creation options - expanded backgrounds that alter skills and improve on skills. This affects bandits and mercenaries, too (even the female mercs get expanded and powerful options).
Troop Tree Overhaul - every faction gets a complete overhaul to its troop tree with loads of new troop types. Loads and loards of new and improved items, including weapons, armor, clothes, horses, foods (including quality), and muddafuggin' War Elephants (which don't look so hot in practice because of engine limitations, but still). New, fully-implemented companions with all the same features of the old ones. There's actually a full wiki describing what it does, but in brief:Ĭharacter overhaul - the appearance of every character in the game is generally improved.