True the books have a bug or two (sometimes they don't make a bookshelf at all, really annoying)
Diversity demon is still pretty good without structures and items (Monster + Human + Beast + Undead + Construct + Demon is not too bad for early game)
I've found the agency is pretty good for destroying stuff. Not reliable, however.
All concerns voiced here are very valid and the game needs balancing and a less random form of randomness. Starting characters may also be great (those starting civilians really bloat the build and are especially a headache early on). Also some rarities should definitely not be showing up earlier in the game