Merc work is full of unsavory, morally questionable crap. However, we’ve seen some guys go to heaven upon death. 

Despite any sins they may have committed, they’ve been welcomed to the good beyond.
 Now, Medic has surgically affixed the other eight souls of his teammates to his own.

 What I’m saying is: essentially, Medic has, in taking their souls, absolved them of sin and assured them a peaceful afterlife. And if that ain’t the sweetest, most selfless shit you’ve ever seen, I dunno what is.