Any tips for getting through a campaign faster?

[Trapped in Samsara]

Hi

...on expert the AI is more cunning on the battlefield and does not forgive any mistakes of yours...
But speaking strategically, on expert the AI is more agressive, it may attack you with several factions at a time, consistently turn down your marriage and alliance offers and generally give you more pain...

I have read several debates down the years about the differences between the hard and expert levels. My recollection is that all of them concluded that the only difference between hard and expert is that in the latter case the AI-player received some additional morale and valour uplift for its units on the battlefield, and you get some more florins at the start of the campaign.

So the expert level AI player (perhaps that should be engine), both on the battlefield and on the campaign map, is no more cunning, or aggressive (except for what the additional morale would confer), or tactically or strategically sophisticated than the hard level AI player.

What do people think?

Best regards
Victor

Sapere aude
Horace