Thanks for the great question, a lot of the points were addressed in the previous answer but to answer some of yours directly:
Ethena will take a slow and controlled approach to integrating with Ethereal, if approved by both the community and the risk committee. Ethena would keep within the same OI caps in line with what CEX’s currently enforce with regards to individual entities, in order to ensure Ethena is not too large of a percentage of open interest on Ethereal. Naturally there is also less inherent counterparty risk using onchain DEXs versus centralized execution venues. Ethena does not build up concentrated positions across exchanges, contracts or custodians and Ethereal would be no different. The Risk Committee will be doing their own due diligence of Ethereal and recommending an initial max allocation range if it passes. On launch, Ethena liquidity would initially be intended to act as a liquidity buffer for Ethereal rather than an immediately material shift of Ethena hedging positions on day 1.
The Ethereal team above have committed to working with the highest quality security firms and researchers in the space in order to minimize any smart contract risk, which would be the only new risk introduced by moving some of Ethena’s hedging positions onchain. Ethena will also be engaging in its own independent technical assessment of Ethereal.
With regards to liquidity management and collateralization ratios, most of that was addressed in the previous answer, but to reiterate: Moving some of Ethena’s hedges onchain would aim to improve transparency of hedging positions but the hedging strategy would remain the same - no material leverage and fully collateralized positions enabling a delta neutral strategy.