Publica looks like a cool project alright.

Another content-based project I like is called Narrative (https://www.narrative.network).  They have not had their ICO yet though.  Be interesting to compare them with publica.  Looks like pubica is more book-focused whereas Narrative is more of a social network. I like the 'economy' structure in Narrative too. 

Support for printed books for publica is cool.