Is this a "do you want this feature" question? Or are you asking if we think it will be implemented?
I'm all for feature additions. Even if I won't use them I'm never going to say it's stupid unless it somehow negatively effects me (it causes crashes, slowdown, or other things). That said, I don't see the usefulness. I feel like the screen is rather small for use as it was implemented in the iPad. Might be useful for note taking or something though to some folks I guess.