Very good suggestion here @funkit!
I agree with you that a balance sheet section like this would be valuable to the user, and is something that a user now has to do of-chain. This does require some coding skill to extract the necessary data, and can be very complicated.
There is work going on with addressing querying larger amounts of historic data for accounts, so it's a good proposal for future work indeed.
Thank you. My data extraction capabilities prohibits me from making sense of it all. So some aid is needed. And I think that is the case for most users.
To me it is not so important if these functions are on- or offline, as long as they are functional and accessible for accountants.