The fact you wont have to fill a KYC everytime you partecipate to a ICO its quite an interesting feature.
Not an interesting feature, it is a marvelous feature.

Also, icos would love to use them because at some point near all people will on their database so only a few people would need to make a kyc.
I agree. The idea sounds really conveniant for users. I hate doing KYC. Sending my documents to some shady unknown on the Internet. I'll study this projectbut it sounds good already.