Alex has always maintained that he built Financier for himself and offered it to us and that we should take it as it is. I too wish that a few extra things could be added, especially as it is so close to being everything I need. However, if I take a step back and look at it just as it is, it's closer to the 100% I want than any other solution I found to date. (Assuming YNAB4 stops functioning).
If Alex is done, I hope he would say so and only then could we begin a conversation to fork Financier and find a developer, or find something else.