I think that any coin and project needs a listing, because it is an asset, and an asset should be actively traded.
UniChain is a coin with DPoS mining. Miners will stake and mine the coin only in the case if they will be sure that they can sell this coin in future for a good price.
Miners will mined the coin with DPoS mining only if price of the coin will be stable or will grow. So fist of all it is important to develop ecosystem of the project that price of coin will grow.