Please explain me a few things: about the new carrier & the new DT

DT has an attack of 45

And seriously DT drops on protoss economy are ridiculous. I used that tactic serveral times. On the 2 or 3 occasions that it worked efficiently, the workers were pretty much all destroyed. DT will still be able to raid bases and single hit lings, banelings, and un-upgraded marines, as well as drones and probes. ^^ but still i wish they would bring DA back... T.T Just the option is good enough for me even if i dont use it...