Been doing a bit of testing for the upcoming tournament in my local store and have found a VERY nice combo:
When you have them in squads of 3 Falcon grav-tanks can deep-strike without scattering, each holding a squad. Fire Dragons are an obvious choice, and Dark Reapers are good too (Slow and Purposeful means they can drop out and start shooting even though they have heavy weapons). Add a third squad of aspect warriors to the 3rd Falcon, then use the Aspect Shrine formation for them to up their ballistic skill... that is a LOT of firepower that's going to get at least one good round of shooting from exactly where it needs to be. I tend to add my Farseer to the mix to throw down guide on the tank squadron, meaning their high-end firepower is also super accurate.

It's very points intensive to pull off, and if you're unlucky with your reserve rolls then you're in trouble, but I still think it's possibly too powerful. What are the thoughts of the community?