ICO without whitepaper will surely not be successful, the whitepaper is the body of the ICO because the investors will visit the whitepaper first and see if it is worth investing project. The good the whitepaper the more it attracts investors.
You have a point on that. Well, basically we need to know the details of the project in which the white paper must have. Most of us here before joining the different bounties, we need to know the platforms, advocacy as well as the concepts of the project. I would say the ICO having a white paper in detailed will definitely caught the attention of many users as well as those investors in the word of crypto currency.