Well, as the satellites are not illuminated by the sun after twilight in the winter, the winter may become the best time for long exposure wide angle imaging. Mid-summer is going to be horrific if thousands of these things go up.
As I recall, one of the Musk sats has a new paintjob that is supposed to be lower albedo. Does it look obviously dimmer? Has anyone observed it yet? My best guess is that if they will have managed an attentuation of the order of 2-2.25 mags. So they will still be bright enough to ruin almost any telescopic image.
The ordure is really going to encounter the ventilation system when they start failing, attitude control is lost and the tumbling starts. Some of the flares are going to be impressive. But hey, its okay, someone will get rich on the back of this.