PANews reported on December 13 that the Polygon community released the "Polygon PoS Cross-Chain Liquidity Plan" Pre-PIP Improvement Proposal. The proposal includes initiating discussions on gradually deploying the DAI, USDC, and USDT reserves of the Polygon PoS Portal cross-chain bridge into curated liquidity pools, thereby launching a new ecosystem incentive program to develop the DeFi ecosystem of Polygon PoS and the entire AggLayer. The proposal proposes to use the more than $1 billion in stablecoin reserves held on the PoS chain bridge to generate income. In addition, the proposal also recommends Morpho Vaults and Markets as the underlying liquidity protocol, Allez Labs as the system's curator/risk manager, Superstate's USTB, Maker's sUSDS, and Angle's stUSD as RWA and DeFi income collateral, and Yearn as the reward program manager. The proposal states that the current opportunity cost of idle reserves is approximately $70 million per year.