Classic aversion to change, new champs are a new element added to the gameplay and people don’t like learning to play with or against new stuff
It might not be what players want, people to tend skew towards wanting more of the same thing, but it’s up Riot to make things that people don’t know they want yet
Game balance disruption, it takes a while for a champ to truly settle in the meta and even then long term health is a concern. As an example, Viego was actually mostly fine after his launch, however he started being an issue when he was finally enabled for pro play in the summer, like ban rate literally spiked in soloq after he started showing
Couple reasons imo:
Classic aversion to change, new champs are a new element added to the gameplay and people don’t like learning to play with or against new stuff
It might not be what players want, people to tend skew towards wanting more of the same thing, but it’s up Riot to make things that people don’t know they want yet
Game balance disruption, it takes a while for a champ to truly settle in the meta and even then long term health is a concern. As an example, Viego was actually mostly fine after his launch, however he started being an issue when he was finally enabled for pro play in the summer, like ban rate literally spiked in soloq after he started showing