It takes a long time to find and study the project. Pay attention to the news and the behavior of the developers. They should not only sing laudatory praises to their projects, but also give a justification. It will not be superfluous to discuss the project on special forums. Here you will get a real picture of what is happening with the ICO project. By the way, many forum participants are tough to project managers, and if you see that managers ignore such forums and messages, there is reason to question the future ICO project itself.