HD technology is extremely primative at the moment. I know a lot of pros that refuse to buy HD because within 2 minutes of purchase it is outdated, and the image quality isnt that good because the gear is the same price, but has the more expencive HD processors, naturally that extra cost has to come from somewhere.
Why stuff up a good formula. The whole XL productline(xl1,xl1s,xl2) are all awesome cameras. DV is still the prefered system in that price range by the majority of the market.
Put bluntly, very few people in the industry actually give a s*** about prosumer HD at the moment.