As many players know, once the timer for whatever mission you are doing reaches the 1 minute mark, you start hearing an audio cue that alerts you that time is running out. However that audio cue is just a very subtle sound of a heartbeat.
Myself (and probably a ton of other players) like to leave the scavenge missions on to collect infected bounties while I multi-task doing something else, but lately I have been less attentive and it has resulted in failed missions where I've lost all the scavenged resources and sustained injuries on my survivors.
I know that you could just check your game tab every now and then to make sure everything is fine but I'd like to suggest a more audible warning cue for the timer running out for quality of life purposes that really benefits everyone. Perhaps something akin to the sounds played when unique/rare infected spawns or perhaps the sound of a digital watch beeping (Dying Light anyone?).