It can be a good thing....like a couple of weeks ago in the departure lounge at FAO awaiting our slightly delayed (around 45mins) EZY flight to LGW, where I was able to advise some more elderly and concerned pax that I could "see" where the inbound was and that it would be here soon.
Lightningmaps was good that day also, as I could see a lot of activity over northern Spain, and sure enough we were treated to a lightshow (which the cabin crew dimmed the lights for - a first for me) about 1hr into the flight home.