Personally , I don't think there should be an ICO without whitepaper. The whitepaper bridges the gap between an investor and a company. Can we say a ICO without a whitepaper is a scam? Or what can you say about an ICO without whitepaper
I have invested in some ico but with whitepaper that gives me crap returns. Now i learned my lessons and will not invest even invest such a thing, maybe the trend should shift to product first before ICO.