Because, frankly, it needs a little work. I've sent Minsc into a group of Kolbolds in Nahkel mines one too many times when all I was trying to do is move the map around. Have two very different actions linked to the same control is...ambiguous at best. To top it off, I can't pause it quickly to fix it when I make a mistake. Minsc, thus far, has been doomed!
(Though, before I whine any more, might I say, the game is fantastic overall. Seriously, to do this well porting to the iPad is immense! I'm just hoping to help improve things.)
How to fix it:
1) Moving the map around should be a 3-fingered swipe action-- I put three fingers on the screen, I move the map around. I use 1 finger, I move a character. I think people should take to it, it's the way a lot of graphic editing programs work on iPad. Besides, people can always be taught.
2) Double tap to auto pause-- That way, no matter where I am tapping, I can quickly pause the game. This would be immensely useful since I don't have access to my long abused space bar...
Touch pads make for some unique challenges for RPGs. But the way I see it, if BG can fix it, others can follow. Maybe we'll see more hardcore games on the iPad at that point :-).
And again, to try and avoid sounding like a huge whiner, you've done a great job so far guys, loving the product. Keep up the good work!