I'm still seeing reasonable declinable quests, which I appreciate. And yes, the KP lengths are steep.
Also, the Knowledge Tree layout seems especially well-considered. I like the way the options open with each step forward. It's definitely improved. A player can choose a particular style of advancement and move through it nicely.
I used a sample grid and laid out a plan including all my existing buildings, adding the available upgrades and new buildings. I was pleased to see that everything could almost fit in the current 8x8 grid. Adding just 2 expansions gave me room for the 3 Dwarven buildings, plus several new residences. The practical applications of this will be more difficult, and likely require another expansion during the inefficiency of upgrades and moves...but in any case, it does seem that the upgrades are more efficient. Players who don't have basic goods manufactories and workshops won't see the improvements, and the prospect of eliminating Magic goods manufactories to replace them with basic goods is pretty daunting.
Perhaps most discouraging is the disparate ratio between potential population gains and population required to make the available upgrades. Per the wiki, I'll need an additional 750 population to fully upgrade one plank manufactory - which is the equivalent of 15 residence upgrades to L17. If I fully upgrade all 30 residences, I can upgrade 2 manufactories. I can tuck in a couple of residences on the existing grid, and fit 7 on 3 expansions (available through the tree) for a total of 4700 population. This isn't enough . So, while we've been given upgrade capability and space availability to make the upgrades, it comes with a less-than-realistic chance to build or even buy the population necessary to complete the upgrades.