I would argue that it's too late, and that PC + Idol Corp should fund a competing con next year
Put that Idol Corp money to work, focus on top-of-the-top streaming tech, have a stream for EVERY panel and other content, do test runs beforehand for twitch/youtube audience participation
EDIT: Additional funding via advertisements, putting spotlight on other companies and chuubas, and digital VIP tickets with additional streaming benefits + goodies (possible exclusive streams as well)