Looks great! I'd love to see an example of a custom form embedded in a SharePoint Online site that submits data to a SharePoint list and/or a SQL Azure database. I know a lot of SharePoint folks are eagerly awaiting the replacement for InfoPath and I'm wondering if form.io could be it.
The PnP repo is one of the most valuable resources out there for #office365dev. The documentation and guidance on how to contribute is incredible, thorough, and clearly took a lot of time. I can say from experience that it's easy to follow. Great job to Vesa and the rest of the PnP team!