The thing is, you’d want it to still act like a roguelike with the appropriate penalties. But you hate to have any progress be for nothing for any (hopefully) unforeseen event/s.
“Hopefully” as in you’re not doing it to cheat. But you wouldn’t really be cheating like you’re forcing the game to start the campaign/mission over again. Because you would’ve (again, hopefully) used a checkpoint, or status save. And you’d continue where you left off.
Starting over would be the closest thing to “cheating”… Like if you were seconds from being gunned down. But I suppose even that could save you if you had a checkpoint to reload. 
Yeah. It would seem handy, but I can also see the conundrum.