I love using a lot of artboards. Many times, when I try to select a series of elements on an artboard by pulling a box around them, I accidentally grab another artboard. Because AD requires pulling the box around the whole element instead of just a part, this happens quite often.
It 'd be good to have a position lock on artboards to prevent this. I already tried activating the lock on an artboard in the layers tab, but this makes the contained elements unselectable.