Hi Martin!
On Arup Carbon - we’re currently in the process of building out a v2, now called ACT, which is open-source and also inspired by @izzylys & co’s efforts at the hackathon. Repository below. Would be great to talk through what you’re trying to achieve and see if there’s any opportunity to partner up.
Currently we’re only looking for volume properties within BIM objects but would be keen to get more data out to improve the process of generating a carbon assessment.
Tom