I see this is really hard questions, because at this time is really hard to choose an ICO project, because so many scams and fraud ICO.
About good prospect and good roadmap, I think this is can't be guarantee if that project really good, because like whitepaper, roadmap, vision and mission, that really easy to creat it, just write it and publish it, the question is : Are that developers can run it all? based on their vision and mission? based on roadmap? I don't think so.
Expectation is different than the reality.