according to what I observed, a good ICO (which has potential in the future) is usually an ICO with a project that has a game or exchange trading concept.
You're right but you are missing something here. But you have a slight point on what I'm about to add as you mentioned a game or exchange trading concepts it means that their tokens will be use for something like service, goods or what. And I would like to add VLB on this, they are planning to make that token used in the vehicle industry once its blockchain is set. Don't fall for those ICO's that are telling they will be great in the future and will be alike to bitcoin.