If it had a reward afterward, more people would complete it. As it stands, the shrieker hallway and the deathsinger are pointless tasks to complete, which is stupid because the lamps give a substantial reward and that part is way easier than killing the Wizards. It's a lot easier to clear the bridge and then find someone with a Crota CP. You're right though. After about 6-7 attempts, I was able to solo it. I can only imagine that a fireteam would be able to clear it easily. Edit: As a few have pointed out, I was wrong to say that the shrieker hallway was pointless because of the second chest. I've only recently discovered the secret to getting in there 100% of the time and briefly forgot about it.