There are a few big things to look at:

• How big is the target market
• What type of project is it, at this point we are still building out the structure of blockchain so I typically look for platform projects over apps
• How good is the team, this is big, do they have a background in the area?
• How good are their advisors/supporters? Do they have some top names that have bought in? If so this is a good sign.