Fighters draw more if there is emotion attached to the outcome of their fights. Love or hate both work. Hate actually works better. Yes it's a cherry on top if they're good fighters with exciting styles but it's the personality that sells the most by far. So here's the idea. Have a reality show based in the Apex. Have the fighters come in spend some time there together (working out, playing cards, drinking whatever) Give them a platform to showcase their personalities. Yes it kinda would be like TUF without fights but with ranked fighters instead of rookies. Currently the only way casual fans get to experience a fighter's personality is via a press conference or 20 second post fight interview. The key to this is to come up with a really good idea for a show and promote the $hit out of it so people watch and get to know the fighters and be invested in their careers which means they will pay to watch them.