Just a quick note. If you are playing on Hard or VH on the strat map, DO NOT GO EAST as the Moors --- at least before you take all of Iberia. Taking Tunis will just bog you down in a neverending war against the Italian powers --- Sicily, Venice, and Milan, who post-patch go crazy for North Africa. Even worse, after I took Tunis I foolishly launched an island invasion to Sardinia, where my armies were assaulted regularly by massive full-stack Italian armies. The Sicilians in particular were nasty --- swarms of Norman Knights, Muslim Archers, and Dismounted Norman Knights that made mincemeat of my Lamtuna and Berber spearlines (only massive doses of javcav saved me). They got so bad that I eventually conquered Palermo and Naples to destroy Sicily, which has alleviated the problem somewhat as Milanese and Venetian armies are nowhere near as challenging. This has probably been the toughest M2TW campaign I've had so far --- gotta admit it was fun as hell, though.

Also on VH, expect to see regular invasions of English and even Scots from the North into Iberia. Plan naval allocations accordingly.