Look at their team and their work process, what is their future. IS their company in the future will grow up fast? How they can earn money with their ecosytem and token system. What you can do with Token in future, not simple sell it for profit. Choose what you love 
This advice is pretty good, but it is usually too hard to evaluate the project this way. Most of them have team members with university degrees and/or work experience in the related field. And yet some might turn out to be strong, while others will not manage to control the project. Looking at team's work process is even harder. You can surely look at the roadmap to see their plans as well as keep track on social media accounts to see what they're doing, but again, it is hard to evaluate whether the team is doing enough for the project to become popular. I know it sound illogical, but imo it is more important to look at whether the project is popular, whether there are many people willing to invest in it, while the actual strength of the project might be deceiving.
I understand your point...But isnt it more important to have strength in the idea and project's potential in the world markets? Because strength in popularity and upfront investment is short-term. Sometimes a good team can turn high investment into lasting profits and business development, but even then the idea and business's purpose needs to be strong