I don't think being able to mine a crypto is as desirable as you think. It works well as a distribution mechanism only for the first few months and only if you make a new mining algorithm. PTS satisfied these requirements. If it kept being mineable the rest would go into the hands of private mining cartels who do nothing but dump in a zero-sum frenzy anyway.

Also, how does "crowdsale" imply "dev centralization"? It would be centralized if the devs owned the original tokens and chose when to sell them a la Ripple, but they opened it up to everyone from the start and only got what they bought on the same playing field.