You should reach about the project. You should check how many visitors at their website. For example, you can you similarweb. Also you should check how many participants at their telegram chat/channel.
Yeah more enthusiasts and participants maybe the project will be more potential, I think the goals and ideas of that project are the most important because that will determine the future of that ICO but there are other important things you should look at like a team formation, how professional they are, see their integrity, then they should have a detailed and clear roadmap