Please, oh please give us some kind of indicator that a spawn will disappear. If they’re epic or rare, let their glow start blinking/pulsating at 15 minutes, with a more rapid blink/pulse at 5 minutes. I cannot tell you how many times in just the past week alone I have opened the game at home to see an awesome rare or epic a few streets away and it disappears before I get there. I work from home and it’s not that easy to just drop everything and run out the door, but I try. And fail. Very, VERY frustrating. Very.