Hi, Chris,
Are the reports from this (now non-existent) repo still available somewhere? Thanks!
I would also share a few items I did recently at [gnucash-portfolio](
https://github.com/MisterY/gnucash-portfolio) while experimenting and learning more about piecash and the reporting base Sebastien is building.
All these projects based on piecash could turn out to be a nice extension of GnuCash. I think GnuCash is doing a fair job of keeping records. Now it's just about displaying those in various shapes and forms.