Another category to the Saffir-Simpson scale?

The winds for the latest hurricanes keep increasing and in a shorter period of time. If the atmospheric pressure drops anymore the interior of Wilma will resemble a tornado. I thought that was only in the movies?

Wilma Strengthens to Category 5 Hurricane: "The hurricane center said Wilma has set a record for hurricane intensity in the Atlantic, as the minimum atmospheric pressure of the monster storm dropped to 882 millibars. It also set a record as the most rapidly strengthening hurricane on record.

'The bottom really did drop out during the night,' Mayfield said. 'It went from a tropical storm to a Category 5 hurricane in a very short period of time.'

Generally, the lower the pressure in the storm, the more intense the hurricane, as the low-pressure area becomes a giant vacuum device, sucking in ever-more heat and energy, the fuel of the storm. Lower pressure means higher wind speed."

I'm not particularly interested in an Alpha storm.