I apologise if this has already been asked, but as I'm at work I can't risk being seen trawling through all the replies! Will there be class-based strongholds? What I mean by this is will there be a different type of building/area depending on class. For example, Baldur's Gate II had a castle for your fighter-types, the planar sphere for the magic-types, and the druid's grove/temple for the hippy/religious-types! I ask because as an avid mage, reading "you cannot build your Training Grounds (and get your Strength bonus after resting at the stronghold) until you have repaired the inner bailey of the stronghold." filled me with trepidation as I'm a musty old sorcerer who just wants a tower and a library.
Of course, I understand time and money constraints of adding these sorts of things, but they could perhaps be considered for expansions if not vanilla. Otherwise, I shall mod them in!
As this is my first post, I'll also add: Thanks for all the hard work bringing us back to the golden age of RPG gaming! It looks awesome and I wish I had caught it on Kickstarter.