I have a strong feeling that the referral system is something to look forward to because it is very different from other ICO's because we can get up to 5 levels unlike others it only has one level. This project is like a good virus that spreads all over to different nations to entice them with its great capability. if this project pushes through with a glorious amount of success then this is something worth promoting because you can earn some commission by doing so as well. That is good to keep the token potent.
yes, you are correct, the referral system they offer is far beyond of what other ico offers. with this kind of system, it motivates people to spread the word and attract more. cause the more you have people under you the better.
This kind of strategy is much similar to "Bring a friend promotions" it encourage users/gamer's to share a great experience to their friends who are interested and until the community bloom. This is the advantages of the referral system.