Just a quick suggestion before you go starting the car normally.
If you whip off the inlet manifold, then turn the car by using a socket on the crank, you will be able to confirm whether or not the inlet valves are opening/closing as they need to be after you put the immediate lever back on. Being that the cam is so scored, perhaps try finding a 2nd hand one on ebay? Shame its not an N53 as i have a couple spare from my rebuild. Also, is there no obvious reason why the Valvetronic has failed as it has? Could be some kind of manufacturing defect if no over rev etc has occured.
I had zero compression on cyl6 with my N53 and removing inlet helped me diagnose a snapped valve spring:
https://www.e90post.com/forums/showthread.php?t=1573305