I think Heidenreich should use the cobra clutch as a finishing move. Maybe something innovative could work as a pinfall based finishing move. I'd like to see a "reverse powerbomb" type move, where you start with the opponent facing upwards in a powerbomb position (the angle they would be if they were getting a reverse DDT). Then you flip the opponent up, and slam them down in a powerbomb motion, but so they take the move on their chest.
Not sure if it could be pulled off, though.