A
DT is really just an upgrade for the unit. So it inherits the same formation benefits as the formations do. I do have some sympathy for you, but I abuse the ghost arc MTC rule as much as I can
It does break a bit when you use your Judicator Bn with night scythes. The rules state that you cna pick one en unit in
LoS from a stalker in the formation and all unis in that formation re roll to hit, wound and armour pen. So you can have twenty lychguard, two night scythes and three stalkers all rerolling H, W,
AP against one enemy death star... and with the night scythes long rang and the unlimited
LoS rule it's open to some abuse.