To help me narrow this down further, are you looking to enhance this feature for: A style universe? A Madden/Road to Glory style career?

Reduce the player's total control over every single match detail to allow for more organic, unscripted moments and surprises.

Integrate areas like the locker room, ramp, backstage area, and GM office where players can actively choose to cut promos, demand matches, or interact with other Superstars to initiate feuds.

Based on the context of gaming (specifically WWE 2K and Madden), the most useful new feature to implement for a "Superstar" mode would be an designed to foster organic, player-driven moments rather than repetitive, scripted storylines. Key Feature: "Legacy Paths & Storyteller"

Utilize a reputation filter that allows you to set a minimum/maximum difficulty level for your opponent, ensuring that a high-reputation superstar doesn't face low-level opponents, keeping the challenge relevant.