ETH ETF Staking / L2 upgrade

Would it be possible for Asset Managers that have ETH ETFs offered to the public to allow staking, while still being able to be liquid? If so, what would be the steps to ensure assets are safe and mantain liquidity.

Same question for L2, would world class asset managers be able to transfer ETH to L2 like Arbitrum to decrease costs and friction in a way that ensures safety of the assets (e.g. no wormholes) etc.