There are a few features I would like to have to avoid work duplication:

1. Syncing time records
2. Generating invoices (contractor for us and us for our customers)

This is probably more distant work and we would need to have some API or REST API. Not sure what would be the best way to approach. Every bookkeeping system has different APIs. We now use QBO, but maybe there is a way to prepare it in more generic way to allow for easier integration with other CPA systems.