Not too positive. Building bridges will be difficult.
The most scientific page and resources on open theism and openness theology is definitely that of the Reformed theologian John Sanders.
The neoplatonist Church Father’s ideas were borrowed by the adherents of Reformed theology. Open theism studies a lot this historical development.
Classical theism (Catholic and Reformed theology, Calvinism included) borrowed unbiblical notions from Greek philosophy.
A new, powerful model of divine providence is convincing and made me think. I have a few doubts, though.