How much power will the Hunter 450 have for highway use?

A common Hunter 350 criticism is its highway capability, or lack thereof, for large riders or those who carry a passenger. Hunter 450 is expected to correct this with a more powerful engine but it is not clear if it will be enough for comfortable highway cruising. Riders are scratching their heads trying to figure out what the ideal power output would be for a bike in this category, given wind resistance at higher speeds, passing ability, and the ability to maintain speed on inclines. We also talk about how the extra power might change the bike's character – will it still be a nimble city bike, or will it become more of an all rounder? In fact, some are even speculating as to what the top speeds could be, and how they compare to other 400-500cc competitors.