I wrote my opinions here:

https://lemmy.world/comment/4184181

Long story short: i like the idea, but the execution leaves a lot to be desired, and it's basically unusable at this point. It's very unbalanced, some buildings are clearly more useful than others, and having one bastion for each player is overkill. It also requires the campaign to stick to a very specific time schedule (a few weeks per level) that I honestly find very difficult to fit in any of the pre-existing modules, and certainly not any of the homebrew campaigns I've played with my friends.