You have a good analytical mind. But use it only when needed.
1. There is no need to “invent” a new Paticca Samuppada for an Arahant. An Arahant just lives the last life until the death of the physical body.
2. The Buddha described only two sets of Paticca Samuppada (PS) for a reason.
– One set (different versions of akusala-mula PS) describe the origin of the world or the origin of suffering.
– The other one describes Kusala-mula PS for the stopping of suffering.
3. Comprehending the “Udayavaya Ñāṇa” means understanding those two processes.
– “Udaya” is the “arising (of world/suffering),” or the anuloma (forward) PS. “Paṭhamabodhi Sutta (Ud 1.1)”
– “Vaya” is the “stopping of that process” or the patiloma (reverse) PS process. “Dutiyabodhi Sutta (Ud 1.2)“