I can not determine which ICO will end successfully or not, all because a project is very difficult to predict. My advice is that you should be able to make your own decisions. One point I can give is that a good project will usually have a good team of developers as well. But that's not a benchmark, the average I feel is that kind of thing. Believe in yourself, it will make you have the motivation to do the analysis and look for an ICO that has a prospect in quartal 2 of 2018.