I'll admit I'm a bit crosseyed at the intent of this expansion. It's one hell of an answer to wall-clock, I'll give you that. It just seems so... secondary... to core gameplay that it's definately not what I'd expected. I'd honestly expected a secondary faction to be 'on the board' with you or something similar.
Yea, and the offroad approach was not my first one, but it was the only one I could think of that accomplished everything I was going for (hero units, places for hero units to grow, more guerilla-fighting, more scripted/journal'd bits, meaningful stuff to do during refleeting without bringing the wrath of the AI down on you, not being insanely long to implement). And to some extent the other factions do come "onto the board" once their scenario is complete, though it is limited to avoid massive AI reprisal.
Fallen Spire worked "on the board" because the whole theme was getting in the AI's face and bringing the wrath down. The all-out-war/sky-blackening-fleet side of the envelope was pushed pretty well in LotS, and here I wanted to push on the other side with the guerilla/single-unit side, and I really didn't see a lot of "room on the board" for much of that.
That said, yea, I can understand why folks would look at it and go "hurh?"
I think it will turn out pretty well in the end but there's a long way to go.