We added a tech tree a la _Civilization_ so that the PCs can make decisions about which parts of Azlanti or aboleth technology they want to develop in their colony--I anticipate that that will be the major focus of interest. I think my player, to my private disappointment, likes ioun towers and clockwork warriors, not fleshwarping labs and mind-controlling plants. (Someday we'll trade sides of the board and I'll create a horrifying little kingdom based on stolen aboleth technology.)
I'm sure you never expected this thread to be revived, but I've been running this AP since January, adapted as much as possible to 5e because only half the group was willing to learn Pathfinder rules (sob), and as a fan of grand strategy games, I loved the idea of incorporating the settlement/kingdom building mechanics. That said, I NEED to see this tech tree you developed, if you still have it lying around. My players have just made it back to Talmandor's Bounty after taking out Brinetooth, so I'm about to find out how in-depth these guys are willing to go into this stuff. My next session won't be for a couple more weeks, so there's still time to get all my ducks in a row. Hope to hear back from you!