in my opinion, the whitepaper cannot always be used as the main reference because basically all investors need real evidence, then according to the roadmap they make. The most important thing is to be on time according to what they promised. You can conclude for yourself what if a project is not on time, there will be many problems that cause their projects to stop or fail.
The difficulties after altcoins launching in the market was it's price that declines, after those bounty hunters who sold their coins at cheaper value. We had no assurance that our new coins showing up in the marker will gain a higher profitable price, due to those reasons behind. We find it difficult at certain times, the situation always remaind the same and we can't see any good pumps happening.
In crypto world there are many peoplo who are lauching ICOs, but many of us dont know how difficult its, maybe because in the pass we look at for ICO trash o fraud, however there are many projects which have o are thinking in good purpose, it depends how do you look. And we need to remember that there a team who are pushing a project, I think the best way to verify if its good or no is whitepaper, or what do you think?? 
