Sounds very interesting Zarax . Several of these ideas have always seemed to have great merit and possibility.

Care to elaborate on the Crusading?

- Revisited crusading system

Instead of having crusading orders tied to each faction, now they work on their own "zones of influence", where you have to build your chapter house or walk with your crusade in order to acquire an order's services.
Crusading roster has also been increased, moving a few units (like Turcopoles) into this specialistic role and giving two units to the factions with less chances to get a chapter house into the right place (this is done because the AI cannot recognize them).
In order to balance it and avoid a crusader swarm to Byz and muslims now crusading price has been doubled.
ichi