After the 5 weeks are over there will be two main benefits to the DAO.
First, we will have support for trading LP tokens on the CoW Protocol. At the moment, if I want to migrate liquidity from one AMM to another then I have to remove remove liquidity, swap tokens, and then add liquidity. With support for LP tokens you could do this in one operation on CoW Swap and solvers will find the most efficient route.
Second, we would be able to develop nested CoW AMMs. These are AMMs that hold LP tokens instead of regular ERC-20 tokens.