We haven't thoroughly discussed the topic yet, but thanks for your kind words and offers!
Speaking for myself, I would have to send over invoices for each donation as they would overlap with my business activities. Every payment I receive needs to be accounted for, and, as you can imagine, that could increase the amount of time I have to spend doing admin tasks and probably tax accounting costs too.
We will soon discuss about it and see if there is a solution that makes everyone happy.
In any case, I'm looking for sponsors to increase the amount of time I can dedicate to the project, be it for specific features or generic development. Of course I'm also available for hire to build custom development/plugins, which is what I mainly do nowadays.