cast caps weren't all that common until the homestuck era when it became extremely apparent that they were needed. then i feel like mcu made it obvious we needed franchise caps too. when there's a popular canon with a massive cast, your game will be overrun no matter how big it is, and it sucks for the other players.

right now it's the hoyoverse canons and i wish more games would cap that as a franchise instead of separate cast caps for genshin and honkai