You forgot that people will also get bored and quit if they play creative but weak teams. And if you create a well balanced team people will be quick to copy it anyway. It is sad, but this is how this kind of games are.

This is why the best phase of the game is mid game when people have some ninja from treasures, but maybe not a full meta lineup. And you c*so actually win with improvised teams because not everybody owns a shisui or a minato.

Maybe in the future when we have more ninja and breakthroughs we'll see more creative teams. Oh wait... half the community are already putting together their kakuzos and edo deidaras