So, still just kicking around different ideas. I think the basics are definitely there, but putting the lists together in different ways helps you to understand what you gain and lose with different setups, and that can inform your decision making.
So this is more of a traditional approach, taking the Psybolt Heavy Bolter backs and eschewing the TL Assault Cannons. In return for the loss of Strength 7 shots, you can fit in another Strike squad and their transport, and you can give the Inquisitors combimeltas. The combimeltas give you a bit more versatility. If going first they can attach to the Henchmen squads and get first turn melta-strikes on your enemy. If going second the Inquisitors can ride in Razorbacks and hang out in midfield.
Not saying this is better, but it's another option. Your thoughts are welcome.
Ordo Malleus Inquisitor, Psyker, Psychic Communion, Combimelta, Servo Skull
Ordo Malleus Inquisitor, Psyker, Psychic Communion, Combimelta, Servo Skull
Henchmen x 3, Meltagun x 3
Henchmen x 3, Meltagun x 3
Strike Squad, Psycannon, Razorback, Psybolt Ammo
Strike Squad, Psycannon, Razorback, Psybolt Ammo
Strike Squad, Psycannon, Razorback, Psybolt Ammo
Strike Squad, Psycannon, Razorback, Psybolt Ammo
Strike Squad, Psycannon, Razorback, Psybolt Ammo
Strike Squad, Psycannon, Razorback, Psybolt Ammo
Stormraven, TL MM, TL Plasma Cannon, Searchlight
Stormraven, TL MM, TL Plasma Cannon, Searchlight
Dreadnought, TL Autocannon x 2, Psybolt Ammo
Dreadnought, TL Autocannon x 2, Psybolt Ammo
Dreadnought, TL Autocannon x 2, Psybolt Ammo
So, it's got some pretty similar elements as the first, the Heavy Bolters are good anti-infantry and light anti-tank. You still have 6 Psycannons in midfield, shooting support from the Dreads, and some mobile melta units. You also end up with five more Marines on the field, which is not insignificant.
The thing is... I still think the Assault Cannons look cooler. Yeah, I said it. I think they are cool. Sue me. Lol.