I don't think there are.
I think it can be said that some sentences have been pointed out as being at the low end of the spectrum, given some of the treatment, but I don't think increasing the available sentence is going to necessarily cure that, given that there aren't comments from the judiciary saying, “We would give more if we could, but we can't. That's not where we are.” There's room to move up, either through the evolution of our common law system, through interventions to the court of appeal, and indeed, through that public education of the judiciary and the public that I spoke about earlier.