Warhammer 40K Tabletop XII: "Now in Rapid Fire range!"

[Winterwind]

cool idea, only one problem: dediacted transports have to be deployed with the troops they come with. And you can't flat-out on a turn you disembark IIRC. so it will be at least turn 2 before you get to do a 75 point strenght 10 hit.

I'm afraid you are mistaken; there is no rule saying that dedicated transports have to be deployed with the troops they come with starting inside them. So, no, there is absolutely nothing in the way of a first turn diving bomb assault.