As a investor is better for me if the ICO have whitepaper because I read it to create prediction and I will decided if Im going to invest or not. As investor we need every single information or full details must be post by the team or in every project so that we can know if the project is potential.
Its a must, and I only read white paper of thsoe project that catches my attention.
Frankly most of the time I just paraphrase it and goes directly into important details. Indeed, a white paper is an important part of a project by detailing how the team develops it and how the project will do.