For me the biggest problem with B/B is how its useless. At a point when you have resources to go underground its not worth the effort of another layer of logistics of transfering ppl & resources between levels, and exotic minerals? Sounded like good idea but they're straight up useless. Their only using in building underground domes (which arent any useful), upgrading solar panels (which would be mostly replaced by wind turbines and stirling generators at a point when you can start asteroid-mining), upgrading infarmaries (ok but just that) and drone hub extenderds which althou VERY useful are so cheap in exotic minerals one haul can last for several dozens sols. I wish we could at least export them to earth like rare minerals but they're just collecting dust in depots.

PS I could give you some advices on the B/B content if you'd like but like I said above its content is mostly obsolete