"They can't build any growth improvements, no Inn, no Pub, no Brewery, etc. But when they defeat men or fallen in combat (be they bandits or enemy armies) they add them as population to the nearest Magnar city."
Don't those improvements affect how much food your city produces and hence how much population you can support? Do the slaves just fend for themselves in that regard? Do the enslaved populace produce taxes or do they produce wealth for their masters via slave labor? Will we have to lure enemies to our big cities to get the population boost needed? Or will large cities develop near high combat zones because of this feat? I am curious to see what kind of game play develops due to this kind of faction differentiation, though more interested to see if there are neat unanticipated play styles that develop due to changes.
I like what I see, go big or go home is the essence of epic fantasy in my opinion. As a recent convert to the vast realms of D&D, I find a lot of value in being able to role play in my games. I am the guy who will create a character and stick to decisions that strategically make no sense, but work great in the story in my head. I would really like to be able to take the characters we've known for so long and really go wild. Like some on here, I tend to be a screw balance, I'll do what I want kind of dude (which kills a lot of my D&D characters -- I'm the opposite of a minmax in a party of minmaxed out freaks of nature).
I don't know what plans there are for any multi-player yet, but that is one place I think this game could thrive. It has the necessary role play elements and mod tools for games to be hosted with all player-factions and less of a push to "win" and just enjoy the story. This is harder to do with the AI, especially because you can't really have a true organic diplomatic chat with them... yet.
Anyway, I am rambling, but I would like to see more variation in classes too, for soldiers, champions, and sovereigns alike. Bards would be cool, while there are abilities that give army bonuses to combat, it's not that specialized. Druids are awesome (and broke) in D&D, being able to turn into a cave bear with the power of say an earth shard and a water (or two earth and a life, something like that).
That is all my rambling for now. Part of me would like to wait to just see the finished product and not get involved in this beta stuff, but it's addicting!