If a tree smashes a window in a storm (something that's a high priority for me to remotely monitor for), it's also likely that the power will be taken out at some point by that same storm, leaving me with dead feeds and no info.
It'd be incredibly helpful (and likely not difficult to program) to add a "last feed" image, showing the last image for any/every cam before its feed went dead. Sort of a final screen cap.
That way, if I wake up in another city, knowing my power's out, I can check iCam and see something other than black....possibly useful info of what things looked like at the moment before blackout....the last moment for which data is available. I can't imagine anyone not wanting that.
Make sense?