I don't want to cast negativity on JSECOIN since I am also a holder and still mining it through my blogs, but they should address all the issue about their token, and do something on the price, we need more exchange or more good platform to push the price.
The problem with JSECOIN is bigger than just they have a blockchain or not. The problem is, the token has no purpose.
Let's say it has its own blockchain and you are really getting tokens with mining. What is the purpose of coins? What is that blockchain for, just mining? What are the specs of that blockchain, is that coin is for payment? It has very unknowns and not a single purpose.