LEO's standalone second layer has already been built, we're currently in early-closed testnet as we continue our development on it and launch in a few months.

LEO's new layer is on Hive (as this is the best blockchain for fast, fee-less and scalable transactions and social features) but we will no longer be on Hive-Engine. We need true decentralization and a robust yet flexible node network to operate LEO with. HE offered us a minimum viable way to launch the LEO token but it lacks in the above qualities which are built as the main focus of our new second layer.

More info on this, how Hive users can operate a node on our new second layer and also the governance token which will operate the LEO DAO will be released later in 2021 ;)