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
The importance of a white paper cannot be undermined, it defines a profit goal, every details of what the project is all about, some technical information, problems to be solved, etc. Any project without one obviously has a long way to go and will likely not get the support of investors