Left Behind is the most useless perk in all of DBD
Ever since the EGC released Left Behind went from situational trash to completely and utterly useless trash. It is now the absolute worst perk in the game because it does literally nothing. For those that dont know Left Behind grants a 75% boost to generator repair speed for each gen remaining in the trial if your the last person alive. Ever since the EGC came out that benefit is now redundant as the hatch will always open regardless of how many gens are done if you are the last person alive and if you are the last person you should stop working on gens and find the hatch because if the killer finds it first all gens get powered anyways.
Devs need to rework it completely to fit in with the new Endgame mechanic. Perhaps Left Behind could grant you 75% speed when opening exit gates and slow the collapse progression by a solid minute. This would make it very possible to get your ass out the gate if the killer managed to find the hatch first.