Could you be more explicit as why you think TOML is not good enough? I used to think YAML was the greatest thing until I saw the spec and what was actually all

Could you be more explicit as why you think TOML is not good enough? I used to think YAML was the greatest thing until I saw the spec and what was actually allowed. And then I sort of moved onto TOML, and now I'm curios, maybe TOML too has showstopping issues :)