This list in the OP is the exact reason cryptocurrencies are currently going nowhere. If we define success as some case of mass adoption (in consumer or industrial markets), then we have to think about market applicability. The car doesn't need an extra wheel unless there's a demand for one in some segments. Similarly, focusing on purely technology features in cryptocurrencies is misguiding us. Crypto is a product, first of all.

So in order to be successful in 5 years time, a cc should have market focus as well as knowledge of its segments and potential users. Otherwise, it is still but a technological sandbox or a decentralized R&D center if you wish.