Thank you for thinking of OETH for this ETH+ proposal Ham 
It will be a great addition that is sure to increase the combined ETH+ yield as is confirmed from your research.
Since the initial OETH RFC back in September 2024, Origin has completed 6 additional audits, 3 of which were relevant to the OETH codebase. These 3 were proactive audits scheduled from Origin’s continuous auditing agreement with OpenZeppelin.
I would also like to draw attention to the “Risk mitigation” section of Origin’s risk framework, which has some good information on how Origin tackles security: Risk Framework | Origin