Re: how effective would the lighter heavyweights be today?
I think Janitor's observations are sound. I can certainly see a Holyfield sized heavyweight making a splash. But I do not think a guy giving up 20 to 30 pounds every time out will have a lot of consistency or durability at the top level. Holy was certainly durable but always inconsistent. And he was truly an exceptional specimen.
I would really welcome an action fighter who is effective moving forward to make a splash, even if only for a few years.