I'm admittedly not a developer but I used to think that the lack of expansive whiteboards was one of the real failings of remote communication. And it still can be. But I've also find that shared Google Docs work better in a lot of situations than whiteboards and post-its all over the place in a big conference room.

(That said, if whiteboards are important to a team, I would imagine there's software for sharing tablet drawing. I've heard there is. I just haven't investigated.)