I've always wanted to build 1st and 3rd companies to complement my Ravenwing, and this list is made up almost entirely of models I already have. Just need to get the Razorback, and some conversions here and there.
HQ:
Company Master - Lion's Roar, power sword
Troops:
Tactical squad (10) - vet sgt, plasma gun, plasma cannon
Tactical squad (10) - vet sgt, plasma gun, plasma cannon
Tactical squad (10) - vet sgt w plasma pistol, flamer, heavy bolter
Rhino
Tactical squad (10) - vet sgt w plasma pistol, flamer, heavy bolter
Razorback
Fast Attack:
Assault Squad (10) - vet sgt w plasma pistol n power sword, 2x plasma pistols
Heavy Support:
Devastators (10) - vet sgt w storm bolter, 4x missile launchers, 1 w flakk
Land Raider
Predator - tri-las, dozer blades