Given the nature of Darklight weaponry and it's reputation for tearing through armour should these weapons be AP1? That'd make them more reliable for exploding vehicles and doing their job right? I know the DE can spam these things but they're only spamming them because they have to. The codex is badly designed because where the DE should be destroying their enemies with small quantity incisive weaponry they're spamming masses of average weaponry to do the lifting for them.
AP 1 lances.blasters would leave many of the Raiders with the luxury to choose Dissie cannons instead, giving the DE a more rounded ability. Instead of being able to kill either vehicles or heavy infantry you could actually kill both in the same list.