Adeptus Astartes: Storm Wing
So the next rules Dataslate is out, and once again, it's a doozy.
You must take one Stormraven, and two Stormtalons. These fliers come from C:SM, so all allies that get Space Marines, etc etc etc....
The special rules? As long as one 'talon lives, the 'raven gets Strafing Run. And all three can come in on the same Reserves roll, sort of like a steroid-enhanced buff to the 'talon's existing Escort rule.
Now, something to note is that since this is a Formation, the Stormtalon can't transport anything. You're literally using the bad boy as a flying tank. Not a bad thing, since with Strafing Run it's gonna seriously make a mess of things, but even if you ran a Marine Formation in a Marine Codex, I think that pesky ally rule would stop you from loading the gunship with troops.
Personally? I think this is just what I was waiting for to give my Dark Angels the fliers that a fast army deserve.