On all 3 of my characters, which are 309 305 and 304, I received a vanguard ghost shell as my reward. 298, 292 and 304 were the light levels. All of these "rewards" were less than the Kingslayer ghost fro the raid. The WORST PART IS THEY YIELD NO PARTS WHEN DISMANTLED, at least when it was a crappy purple gun I got some mats but this is essentially 9 marks as my nightfall..or a few more if I level shell before dismantling. There is ONLY a 1/11 chance of receiving a 310 ghost during raid, which isa small chance anyway. If shells are going to be the b.s. drop that nightfalls frequently yield, once again there will be almost no reason to run it. TL;DR Subject is my suggestion. Ghost shells <310 are garbage rewards that yield no mats and at max 15 marks.