This is even better than a new faction preview. Very promising indeed.
The system seems to be as unique as I expect EB features to be - although it somehow reminds me of MTW where nearly every province gave a special bonus to or allowed for the exclusive training of particular units.
But after all that's a really good thing since MTW was the last TW game so far that satisfied me already in vanilla edition.
BTW: Is there any chance to get the "glorious achievements" campaign style back?
Winning not necessary by conquering everything you can grab (or meet the win conditions formed out of a province list and maybe a few destroyed factions) but instead by collecting points?
Could be implemented by events and a counter, I think.

Anyway, thanks for this preview, appreciated it a lot. Looking forward to read whole books of history education in EB II which will be a pleasure.