I'm glad you asked about this question!

Reasoning:

• Gary Vee is a marketing genius and he is incredibly influential. His presence here would bring a lot of people to the platform, and he'd likely be able to chime in on how he believes Steemit could market itself better.

• Satoshi Nakamoto... I don't think much more reasoning is needed here.

• Selena Gomez has more Instagram followers than any other user. Like her or not, she is one of the most influential social media icons, which means she would bring a huge audience with her.