Come on, does a built in flash really add much weight and bulk? I estimate the pop up flash of my 7D to weigh about 20 grams max.
You're right, but it's another part to get broken, to be weathersealed and to rely on your batterylife. The whole
effort to give you a 100% view is higher with a builtin flash (which will count on the costs after all). Builtin flashs
are to close to the lens axis, they're prone to red eyes and harsh lightning. I would like to see a buildin trigger,
but maybe that differs the users of pro- or semipro cams. Without running anyone down, really.