This is a really cool idea! I would be interested to see how blockchain plays into this mix, especially as some platforms offer completely decentralized websites. If you are looking to build a Facebook, be careful as many decentralized platforms have tried but failed due to the lack of content moderation. I do think that if you marketed the absolute f*ck out of this, and show why FB sucks and why this is better, then you could def get lots of users. If your looking to grow you need to focus on building a community (allow people to interact and make it super easy), and from there, you should see something like FB emerge.