Is it necessary to use the ui.nodes key from the flow to display the inputs? I want them to be in a specific order on the registration page because I am adding fields to capture at registration. Would it be an anti pattern to capture the flow id, csrf_token and manually post without using the form? Edit: Now that I think about it. Is it possible in the identity config to specify the order of the fields?

As long as you're sending the required data to kratos in your POST request, you're fine to do whatever you want.