My suggestion is to Add Another one “Escape condition” for last survived FT member.
All of us were in situations where you the last survivor (reinforcments is used already). You are trying to hide from pred, you going even good BUT there is only 2 options left: Kill pred (Low chance) and Call chopper and escape.
In second case you will be spotted immediately and killed because pred will find you with full hp and army of AI.
As some of us saw in DbD last survivor can use not only Escape gates but Black locks. If lock was closed by killer - there is only gates left.
My suggestion is: If you are the Last survivor and Reinforcement is gone = game timer is extended for more 2 minutes and Extra Mission appears. After completing this mission - you successfully escaped.
This will remove the feeling of hopelessness for FT and give to him:
- choice (fight pred, chopper and fight pred, try to complete the mission end try to escape);
- hope.
For Pred this will give:
- More preasure in endgame;
- Remove early feeling of victory;
- Will increase value of tracking perks (like Footprints, Voice bubbles and Target isolation (it can be even removed in this stage)).
What do you think about that?

