There are various kind of old crypto projects that has no team but still they are among the best projects today, I believe this happened because many old projects followed the footstep of Bitcoin, bitcoin would have been in tougher situations if the team or ceo is public I believe but today it's a complete different story or should I say experience? Since the birth of ICO we've seen tons of scam projects that aren't scared of revealing their faces even when they knew they are going to exit scam on investors fund, so for me hidden team members or not still doesn't make a difference..
I think the most important thing to make a project successful is the product idea of the project and the progress of the project at any time, because if the project is good and useful for the future then the project will definitely be successful, even if the identity of the team is published or the identity of the team is hidden, therefore the most important thing is the product and the progress of the project and not the identity of the team (published or hidden).