The I Claudius fandom has like a total of three people, without counting me, and I love imagining what it would look like if suddenly this old book/series would get the popularity of GOT/HOTD or something like that.
So here are my theories:
Tiberius would have a fanbase and would be considered a “poor little meow meow”
People would make girlboss fancams for Livia
Messalina apologists
Herod would be the fandom bicycle
Herod/Castor would be one of the top 10 ships on AO3
Herod/Claudius would also be up there on the top 10 ships.
Some people would also ship Agripina/Tiberius and they would be deemed as problematic
Agripina/Germanicus Girlboss/Malewife
Edits of Antonia and her children to “I bet on losing dogs” and other Mitski songs
Fan casts for all book characters that didn't make it to the show.
YouTube compilations of “Caligula being a mood”, “Caligula being Caligula”, “Caligula being a menace”, etc.