From a design perspective I have to say though that I really dislike how steep and complex the basecamp data looks. While I will directly agree that it'd be important for people who like such complexity to be able to view this, I will most certainly try to improve the visual presentation of this. Especially in an app it's important to view things as efficiently as possible. Perhaps a solution would be to be able to download or open a data-pdf for a more in depth look.

Your general point: lunch pauses should not be included in total duraction and averages, is of course correct.