Cas, the points program has not been announced yet. The numbers shown above were on a survey that Carnival is sending to a sample of its past guests. I also received one. Right now, they're just seeking opinions.
If Carnival does adopt a points program, I would expect that the number of points awarded is related to the number of nights cruised, possibly with bonuses for sailing in suites or other factors. For example, Holland America Line also considers the amount spent in the onboard shops. Princess bases the level on either number of cruises or number of days, whichever results in the higher level.
So, right now, it's too early to say what a revised program, if any, would entail.